The Dr. Layne Norton Podcast

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  AMA 6 - Weight Loss, Genetics, Muscle Confusion, Who To Trust, and More 14.09.2026 36min

  In this listener Q&A, Dr. Layne Norton answers your most-asked questions on training, fat loss, genetics, recovery, and how to cut through the noise — with his kitten Wheezy as co-host.Topics covered in this episode:• Training to failure — is it more important for advanced lifters than beginners?• Muscle confusion — why constantly changing exercises creates the illusion of progress (and how much variety is actually useful)• Muscle mass and longevity — is there a point where more muscle stops helping, and why extreme muscularity can look like a U-shaped curve• “I barely eat anything but I’m not losing weight” — why feelings aren’t data, food volume vs calorie density, and why one week of tracking changes everything• Ultra-processed foods — do they cause more fat gain than minimally processed foods when calories are matched?• Metabolic adaptation — how reversible is it, what’s transient vs what’s tied to lost lean mass, and what happens if you stay at the new body weight• How to know who to trust — look for nuance, people who change their minds, logical consistency, and those who haven’t made a diet their identity• Smartwatch recovery scores & HRV — why you should not change your training based on a single day’s number• “Do I have bad genetics?” — Layne’s 10-year answer, chicken-leg-to-world-record-squat story, and the motto “let’s find out”• What Layne loves (and hates) most about his jobAnd more!Whether you’re stuck on fat loss, second-guessing your program, or tired of conflicting advice, this episode gives practical, no-BS takeaways you can use.#BioLayne #LayneNorton #QandA #AMA #EvidenceBasedNutrition #TrainingToFailure #MetabolicAdaptation #FatLoss #MuscleBuilding #Genetics #HRVSPONSORS• Physique Coaching Academy - Advanced Coaching and Nutrition Education for Personal Trainers: https://physiquecoachingacademy.com• Workout Builder – Customized training programs for all experience levels: https://biolayne.com/workout-builderLAYNE'S COMPANIESCarbon Diet Coach: https://joincarbon.com/podcastOutwork Nutrition: https://outworknutrition.comREPS Research Review: https://biolayne.com/repsWorkout Builder: https://biolayne.com/workout-builderTeam Biolayne: https://biolayne.com/online-coachingPhysique Coaching Academy: https://physiquecoachingacademy.comFOLLOW LAYNEhttp://www.facebook.com/laynenortonhttp://www.twitter.com/biolaynehttp://www.instagram.com/biolayneTIMESTAMPS0:00:00 - Intro0:00:55 - Training to Failure0:02:58 - Muscle Confusion0:05:06 - Muscle Mass for Longevity0:07:05 - Physique Coaching Academy0:08:06 - Hard Time Losing Weight0:09:48 - Processed Food0:11:24 - Metabolic Adaptation0:12:58 - Who to Trust0:18:55 - Wearables0:21:13 - Workout Builder0:22:08 - Good Genetics0:27:02 - Love/Hate Most About My Job0:30:17 - Training Evolution0:32:55 - Quitting vs Letting Go0:35:55 - OutroSHOW NOTEShttps://biolayne.com/podcasts/dr-layne-norton-podcast/ama-06-weight-loss-genetics-muscle-confusion-who-to-trust-and-more-episode-36
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  Overrated/Underrated: Muscle Building Edition 31.08.2026 36min

  In the second installment of the Overrated/Underrated series, Dr. Layne Norton ranks the most talked-about muscle-building strategies as overrated, underrated, or properly rated — based purely on the evidence.No hype. No bro-science. Just what the data actually says about what builds muscle, what doesn’t, and what’s been oversold.Layne covers training intensity, proximity to failure, volume, rep ranges, range of motion, exercise selection, muscle confusion, protein timing, post-workout nutrition, and more! He also explains why he recently changed his mind on calorie surplus, why most people are not training as close to failure as they think, and why stretch/lengthened-position tension matters more than most lifters realize.Whether you’re a coach, athlete, or just trying to build muscle efficiently, this episode cuts through the noise so you can stop wasting time on the overrated stuff and double down on what actually moves the needle.#musclebuilding #hypertrophy #evidencedbasedfitness #DrLayneNorton #BiolayneSPONSORS• Workout Builder – Customized training programs for all experience levels: https://biolayne.com/workout-builder• Outwork Nutrition - Evidence-Based Supplements to Support Your Hard Work: https://outworknutrition.comLAYNE'S COMPANIESCarbon Diet Coach: https://joincarbon.com/podcastOutwork Nutrition: https://outworknutrition.comREPS Research Review: https://biolayne.com/repsWorkout Builder: https://biolayne.com/workout-builderTeam Biolayne: https://biolayne.com/online-coachingPhysique Coaching Academy: https://physiquecoachingacademy.comFOLLOW LAYNEhttp://www.facebook.com/laynenortonhttp://www.twitter.com/biolaynehttp://www.instagram.com/biolayneTIMESTAMPS0:00:00 - Intro0:00:43 - Training Intensity0:05:34 - Training to Failure0:07:04 - Training Volume0:09:07 - Rep Ranges0:12:19 - Workout Builder0:13:16 - Range of Motion0:15:31 - Exercise Selection0:18:02 - Muscle Confusion0:19:29 - Tempo0:20:54 - Training Frequency0:22:13 - Protein Intake0:22:54 - Carbohydrates0:24:12 - Outwork Nutrition0:25:39 - Fats0:27:02 - Calorie Surplus0:27:36 - Protein Timing0:28:38 - Protein Quality0:30:12 - Recomposition0:32:15 - Post-Workout Nutrition0:33:28 - Creatine0:35:19 - Testosterone Boosters0:35:51 - OutroSHOW NOTEShttps://biolayne.com/podcasts/dr-layne-norton-podcast/overrated-underrated-muscle-building-edition-episode-35
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  The Ketogenic Diet with Dr. Dominic D'Agostino 17.08.2026 2godz 21min

  In this episode of the Dr. Layne Norton Podcast, Layne sits down with renowned researcher and ketogenic diet expert Dr. Dominic D’Agostino to dive deep into the science of the ketogenic diet. Professor Dominic D’Agostino (University of South Florida Morsani College of Medicine / Institute for Human and Machine Cognition) is one of the leading voices on nutritional ketosis, exogenous ketones, and metabolic therapies. Together, they unpack what the research actually shows about keto – beyond the hype and social media claims.They cover the mechanisms of ketosis, potential therapeutic applications (including epilepsy, metabolic health, neurological conditions, and ongoing research areas like cancer support), practical considerations for implementing a well-designed ketogenic approach, common misconceptions, protein and micronutrient needs, exogenous ketones, and how keto stacks up for fat loss, performance, and long-term adherence compared to other dietary strategies. Expect an evidence-based, no-BS conversation that prioritizes data over dogma.#KetogenicDiet #Keto #DominicDAgostino #LayneNorton #NutritionScience #MetabolicHealth #EvidenceBasedNutrition #DrLayneNortonPodcastSPONSORS• David Protein - Buy 4 cartons, get 1 FREE at: https://davidprotein.com/pages/layne• REPS Research Review: https://biolayne.com/repsLAYNE'S COMPANIESCarbon Diet Coach: https://joincarbon.com/podcastOutwork Nutrition: https://outworknutrition.comREPS Research Review: https://biolayne.com/repsWorkout Builder: https://biolayne.com/workout-builderTeam Biolayne: https://biolayne.com/online-coachingPhysique Coaching Academy: https://physiquecoachingacademy.comFOLLOW LAYNEhttp://www.facebook.com/laynenortonhttp://www.twitter.com/biolaynehttp://www.instagram.com/biolayneTIMESTAMPS0:00:00 - Intro0:02:37 - Dom's Background0:05:57 - Ketones and Seizures0:15:23 - Animal Research0:18:42 - David Protein0:20:17 - Mechanisms of Ketone Therapy0:28:07 - Magnesium0:29:12 - Dementia/Alzheimers0:37:55 - Cancer0:45:38 - REPS Research Review0:46:29 - Cancer Cont.1:16:50 - Muscle Hypertrophy1:27:55 - Fasting1:38:33 - Training2:01:42 - Ranking Importance2:04:34 - Last Question2:20:13 - OutroSHOW NOTEShttps://biolayne.com/podcasts/dr-layne-norton-podcast/the-ketogenic-diet-with-dr-dominic-dagostino-episode-34
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  Overrated/Underrated: Fat Loss Edition 03.08.2026 39min

  In the first installment of a new series, Dr. Layne Norton ranks the most talked-about fat-loss strategies as overrated or underrated, based purely on the evidence. No hype. No bro-science. Just what the data actually says about what works, what doesn’t, and what’s been oversold.Topics covered:• Fasting• Low-carb diets• Whole foods• Carbs at night• Cardio• Resistance training• Circuit training classes• Diet breaks• Protein intake• Meal timing & frequency• Artificial sweeteners• Weighing yourself consistently• GLP-1s• Fat burnersLayne breaks down the key studies, clarifies common misconceptions, and gives practical takeaways so you can stop wasting time on the overrated stuff and double down on what actually moves the needle. Whether you’re a coach, athlete, or just trying to lose fat efficiently, this episode cuts through the noise.#WeightLossScience #FatLoss #DietBreaks #EvidenceBasedNutrition #DrLayneNorton #Biolayne #NutritionScienceSPONSORS• Carbon Diet Coach – 14 day free trial: https://joincarbon.com/podcast• Team Biolayne – One-On-One Coaching: https://biolayne.com/online-coachingLAYNE'S COMPANIESCarbon Diet Coach: https://joincarbon.com/podcastOutwork Nutrition: https://outworknutrition.comREPS Research Review: https://biolayne.com/repsWorkout Builder: https://biolayne.com/workout-builderTeam Biolayne: https://biolayne.com/online-coachingPhysique Coaching Academy: https://physiquecoachingacademy.comFOLLOW LAYNEhttp://www.facebook.com/laynenortonhttp://www.twitter.com/biolaynehttp://www.instagram.com/biolayneTIMESTAMPS0:00:00 - Intro0:01:27 - Fasting0:07:16 - Low Carb Diets0:09:51 - Team Biolayne Coaching0:10:41 - Whole Foods0:12:24 - Carbs at Night0:14:34 - Cardio0:16:05 - Resistance Training0:17:52 - Circuit/Group Training0:18:44 - Diet Breaks0:20:38 - REPS Research Review0:21:28 - Protein0:23:53 - Meal Timing0:24:31 - Artificial Sweeteners0:31:10 - Weighing Yourself0:33:07 - GLP1s0:38:13 - Fat Burners0:39:11 - OutroSHOW NOTEShttps://biolayne.com/podcasts/dr-layne-norton-podcast/overrated-underrated-fat-loss-edition-episode-33
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  Sports Nutrition & Performance with Dr. Mike Ormsbee 20.07.2026 2godz 1min

  In this episode, I sit down with Dr. Mike Ormsbee, Director of the Institute of Sports Science and Medicine at Florida State University. Mike is one of the sharpest, most pragmatic researchers in the field — a former hockey player turned leading expert on exercise, nutrition, fat metabolism, sleep, and performance.We had an absolute blast geeking out for nearly two hours. Mike and I share very similar backgrounds (athletes who got into lifting and science for selfish reasons — getting jacked and lean), and it shows in how practical and grounded this conversation is.What we covered:• Mike’s journey from competitive ice hockey and early bodybuilding days to becoming a professor and running one of the top sports nutrition labs in the country• Resistance training vs. endurance exercise for fat metabolism (what the cellular data actually shows)• Mechanisms vs. real-world outcomes in fat loss• Pre-sleep nutrition: Does eating protein (or anything) before bed ruin fat loss, sleep, or recovery?• Interpreting science, research biases, publication issues, and why “what works for you” still mattersWe also had some friendly disagreement on collagen, which I think you’ll really enjoy.If you want evidence-based, no-BS discussion on training, nutrition timing, supplements, and how to actually apply the science to real life (whether you’re an athlete or just trying to stay healthy and jacked), this one is for you.#DrLayneNorton #MikeOrmsbee #SportsNutrition #ResistanceTraining #PreSleepProtein #Collagen #FatMetabolism #EvidenceBasedFitnessSPONSORS• Outwork Nutrition - Evidence-Based Supplements to Support Your Hard Work: https://outworknutrition.com• Workout Builder – Customized training programs for all experience levels: https://biolayne.com/workout-builderLAYNE'S COMPANIESCarbon Diet Coach: https://joincarbon.com/podcastOutwork Nutrition: https://outworknutrition.comREPS Research Review: https://biolayne.com/repsWorkout Builder: https://biolayne.com/workout-builderTeam Biolayne: https://biolayne.com/online-coachingPhysique Coaching Academy: https://physiquecoachingacademy.comFOLLOW LAYNEhttp://www.facebook.com/laynenortonhttp://www.twitter.com/biolaynehttp://www.instagram.com/biolayneTIMESTAMPS0:00:00 - Intro0:02:47 - Mike's Background0:06:12 - The Start of Resistance Training Research0:10:38 - Fat Metabolism0:17:35 - Lipolysis vs Fat Loss0:21:40 - Outwork Nutrition0:23:08 - Research Considerations0:28:45 - Hard Training Above All0:33:16 - Risk Probabilities0:35:10 - Sleep Nutrition Research0:44:06 - Workout Builder0:45:02 - Sleep Nutrition Research Cont.0:45:50 - Practical Takaways0:47:30 - Performance Outcomes0:49:07 - Study Design Evolution0:52:06 - Wearables0:56:51 - Missing Sleep and Sleep Schedules1:07:31 - Training or Competing at Night1:11:11 - Nutrient Timing1:18:01 - Carbs and Exercise Performance1:31:27 - Collagen1:42:47 - Research Discussion1:49:46 - Final Question1:59:47 - OutroSHOW NOTEShttps://biolayne.com/podcasts/dr-layne-norton-podcast/sports-nutrition-performance-with-mike-ormsbee-episode-32
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  Metabolic Adaptation 06.07.2026 1godz 16min

  In this episode, Dr. Layne Norton delivers a comprehensive, evidence-based breakdown of metabolic adaptation — one of the biggest reasons why fat loss slows down and maintaining weight loss feels so difficult.Layne explains exactly what metabolic adaptation is, how it affects every major component of energy expenditure (BMR, NEAT, exercise energy expenditure, and TEF), and the powerful neuroendocrine and behavioral changes that create an “energy gap” driving weight regain from both sides of the calorie equation.He also covers the under-discussed adaptations in hunger hormones (leptin, ghrelin, GLP-1, PYY, CCK, etc.), brain responses to food, adipose tissue changes that favor fat storage, and whether rapid refeeding can increase fat cell number. The episode finishes with practical, research-backed strategies to minimize these adaptations and common myths (including whether “starvation mode” is real).Whether you’re currently cutting, planning a fat loss phase, or struggling with weight maintenance, this episode will give you a clear scientific understanding of what’s happening in your body and how to work with these adaptations more effectively.#MetabolicAdaptation #WeightLossScience #FatLoss #TDEE #BMR #NEAT #Leptin #Ghrelin #DietBreaks #EvidenceBasedNutrition #DrLayneNorton #Biolayne #NutritionScienceSPONSORS• Carbon Diet Coach – 14 day free trial: https://joincarbon.com/podcast• Team Biolayne – One-On-One Coaching: https://biolayne.com/online-coachingLAYNE'S COMPANIESCarbon Diet Coach: https://joincarbon.com/podcastOutwork Nutrition: https://outworknutrition.comREPS Research Review: https://biolayne.com/repsWorkout Builder: https://biolayne.com/workout-builderTeam Biolayne: https://biolayne.com/online-coachingPhysique Coaching Academy: https://physiquecoachingacademy.comFOLLOW LAYNEhttp://www.facebook.com/laynenortonhttp://www.twitter.com/biolaynehttp://www.instagram.com/biolayneTIMESTAMPS0:00:00 - Intro0:02:50 - What is Metabolic Adaptation0:06:18 - Components of TDEE0:12:38 - BMR0:27:22 - NEAT0:31:10 - Exercise Expenditure0:34:44 - TEF0:35:16 - Leptin and Appetite0:36:35 - Hormones0:42:05 - Changes to the Brain0:49:36 - The Energy Gap0:50:17 - Changes to Adipose Tissue0:57:44 - Rapid Regain After Weight Loss1:03:04 - How to Minimize Metabolic Adaptation1:10:57 - Myths1:15:48 - OutroSHOW NOTEShttps://biolayne.com/podcasts/dr-layne-norton-podcast/metabolic-adaptation-episode-31
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  AMA 05 - Creatine, Plant Protein, Collagen, Fiber, GLP1s and More 22.06.2026 57min

  In this listener Q&A, Layne dives deep into your most-asked questions on supplements, protein sources, cholesterol, weight-loss medications, and more. As always, he breaks down the actual research and gives no-BS, evidence-based takeaways you can actually use.Topics covered in this episode:• Creatine HCl – Supplementing with which form of creatine (hydrochloride vs others)? What does the research actually show?• David Protein Bars – Thoughts on the lawsuit and bars failing label tests (lawsuit update included)• Plant proteins & amino acids – Do they really miss certain essential amino acids? Should it fully count toward your total daily protein intake?• Ashwagandha safety – Should you be worried about liver toxicity?• Collagen supplements – Benefits for tendons, joints, injury recovery, and connective tissue (even if it’s not great for muscle building)• Dietary fiber – Why it’s important for health and practical ways to get more (supplements vs whole foods)• LDL cholesterol – Oxidized LDL and particle size: what actually matters and why the debate exists• GLP-1 medications – Are they just a “quick fix”? Willpower, muscle loss concerns, and what happens with weight regain after stopping• And more!Whether you’re optimizing your supplement stack, navigating plant vs animal protein debates, or curious about the latest on GLP-1s and cholesterol, this episode delivers clear, science-backed answers.#BioLayne #LayneNorton #QandA #AMA #EvidenceBasedNutrition #Creatine #PlantProtein #Ashwagandha #Collagen #DietaryFiber #LDLCholesterol #GLP1 #Ozempic #NutritionScienceSPONSORS• Team Biolayne – One-On-One Coaching: https://biolayne.com/online-coaching• REPS - Research Explained in Practical Summaries: https://biolayne.com/repsLAYNE'S COMPANIESCarbon Diet Coach: https://joincarbon.com/podcastOutwork Nutrition: https://outworknutrition.comREPS Research Review: https://biolayne.com/repsWorkout Builder: https://biolayne.com/workout-builderTeam Biolayne: https://biolayne.com/online-coachingPhysique Coaching Academy: https://physiquecoachingacademy.comFOLLOW LAYNEhttp://www.facebook.com/laynenortonhttp://www.twitter.com/biolaynehttp://www.instagram.com/biolayneTIMESTAMPS0:00:00 - Intro0:00:39 - Creatine HCL0:06:24 - David Protein Lawsuit0:10:59 - Team Biolayne Coaching0:11:50 - Plant Protein Amino Acids0:14:24 - Plant Protein Total Protein Intake0:16:43 - Ashwagandha Liver Toxicity0:19:10 - Collagen0:25:16 - Fiber0:34:19 - REPS Research Review0:35:09 - LDL Cholesterol0:47:29 - GLP1's0:57:04 - OutroSHOW NOTEShttps://biolayne.com/podcasts/dr-layne-norton-podcast/ama-05-creatine-plant-protein-collagen-fiber-glp1s-and-more-episode-30
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  Protein Deep Dive 08.06.2026 1godz 7min

  In this deep dive episode, Dr. Layne Norton breaks down everything you need to know about protein — from the molecular level to practical real-world application.We cover:• What protein actually is, how it’s made and broken down in the body• The complete science of muscle protein synthesis (MPS) and muscle protein breakdown (MPB), including the critical roles of mTORC1, leucine, eIF4E, 4E-BP1, and more• How dietary protein is digested, absorbed, and used by your muscles• Why leucine content matters and how different protein sources (whey vs. wheat vs. collagen) dramatically affect MPS• The “muscle full effect,” protein thresholds by age, and why protein distribution across meals may (or may not) matter• How high-protein diets impact fat loss, satiety, energy expenditure, and long-term body composition• The truth about protein and health outcomes: mortality, cardiovascular disease, cancer, kidney function, and type 2 diabetes — with the latest evidence separated from the hype and confounding factorsWhether you’re a casual gym-goer, competitive athlete, bodybuilder, powerlifter, or just someone who wants to optimize muscle and health, this episode gives you the complete, evidence-based picture on protein intake, quality, timing, and safety.Plus, tips for vegans and how to actually use this information day-to-day.If you want to understand protein at a level most people (and even many coaches) never reach, this is the episode for you!#Protein #MuscleProteinSynthesis #HighProteinDiet #LayneNorton #EvidenceBasedNutrition #BodybuildingScience #FatLoss #MuscleBuildingSPONSORS• Outwork Nutrition - Evidence-Based Supplements to Support Your Hard Work: https://outworknutrition.com• David Protein - Buy 4 cartons, get 1 FREE at: https://davidprotein.com/pages/layneLAYNE'S COMPANIESCarbon Diet Coach: https://joincarbon.com/podcastOutwork Nutrition: https://outworknutrition.comREPS Research Review: https://biolayne.com/repsWorkout Builder: https://biolayne.com/workout-builderTeam Biolayne: https://biolayne.com/online-coachingPhysique Coaching Academy: https://physiquecoachingacademy.comFOLLOW LAYNEhttp://www.facebook.com/laynenortonhttp://www.twitter.com/biolaynehttp://www.instagram.com/biolayneTIMESTAMPS0:00:00 - Intro0:01:20 - Protein Chemistry Overview0:16:15 - Outwork Nutrition0:17:43 - Protein Digestion and Absorption0:21:17 - How Protein Affects Muscle0:37:00 - David Protein0:38:35 - Protein Distribution0:43:05 - Protein and Fat Loss0:48:09 - Protein and Mortality0:50:32 - Protein and Cardiovascular Disease0:52:06 - Protein and Cancer0:53:32 - Protein and Kidney Disease0:56:38 - Protein and Type 2 Diabetes0:57:53 - Recommendations1:06:53 - OutroSHOW NOTEShttps://biolayne.com/podcasts/dr-layne-norton-podcast/protein-deep-dive-episode-29
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  Seed Oils: The Evidence-Based Deep Dive 25.05.2026 1godz 15min

  Are seed oils (and the polyunsaturated fats they contain) quietly destroying your health… or is the outrage mostly hype and misinformation? In this deep-dive episode, Dr. Layne Norton cuts through the noise with a comprehensive, evidence-first breakdown of the science on seed oils, linoleic acid (LA/PUFA), saturated fat, LDL/ApoB, oxidation, inflammation, and cardiovascular outcomes.Layne directly addresses the most common claims made by the anti-seed-oil crowd and shows why the totality of high-quality evidence—from mechanistic studies to randomized controlled trials and Mendelian randomization—supports replacing saturated fat with polyunsaturated fats from seed oils for better metabolic and heart health.What’s covered in this episode:• ApoB & LDL oxidation myth: Why PUFA-enriched LDL is more prone to oxidation per particle, but why that actually misses the bigger picture (lower LDL-P/ApoB, better clearance, less overall atherogenic burden in the arterial wall)• Human RCTs: A balanced review of the major trials (Minnesota Coronary Experiment, Sydney Diet Heart, LA Veterans, Oslo Diet-Heart, Finnish Mental Hospital, STARS, etc.)—including their real strengths, weaknesses, trans-fat confounds, and what the data actually show when you filter properly• Mendelian Randomization evidence: Why lifelong lower LDL/ApoB causally reduces CVD risk regardless of how it’s lowered, and why ApoB/LDL particle number is the key driver (not just LDL-C)• The Linoleic Acid (LA) hypothesis: Does more LA → more arachidonic acid → more inflammation, T2D, CVD, and cancer? Layne examines the actual human data on tissue levels, prostaglandin synthesis, systemic inflammation markers, insulin sensitivity, and disease outcomes• Seed oil processing & refining: Hexane, neutralization, bleaching, deodorization—why the “chemical” scare tactics don’t hold up, peroxide/anisidine values actually drop during refining, and why the final product is far safer and cleaner than the fear-mongering suggests• Naturalistic fallacy & miscellaneous claims: Why “our ancestors didn’t eat seed oils” isn’t a compelling argument, plus other common talking pointsWhether you’re team butter, team vegetable oil, or just tired of the tribal nutrition wars, this episode gives you the full context and references so you can make up your own mind based on science instead of social media soundbites.#SeedOils #PUFA #HeartHealth #Cholesterol #EvidenceBased #LayneNorton #NutritionScience #SaturatedFat #LinoleicAcid #CardiovascularHealthSPONSORS• David Protein - Buy 4 cartons, get 1 FREE at: https://davidprotein.com/pages/layne• Carbon Diet Coach – 14 day free trial: https://joincarbon.com/podcastLAYNE'S COMPANIESCarbon Diet Coach: https://joincarbon.com/podcastOutwork Nutrition: https://outworknutrition.comREPS Research Review: https://biolayne.com/repsWorkout Builder: https://biolayne.com/workout-builderTeam Biolayne: https://biolayne.com/online-coachingPhysique Coaching Academy: https://physiquecoachingacademy.comFOLLOW LAYNEhttp://www.facebook.com/laynenortonhttp://www.twitter.com/biolaynehttp://www.instagram.com/biolayneTIMESTAMPS0:00:00 - Intro0:02:21 - Personal Bias0:03:42 - Arguments Against Seed Oils0:05:33 - Fatty Acid Structure0:08:31 - Prostaglandin Pathway0:09:09 - Current Health Advice0:10:03 - LDL Cholesterol0:12:42 - Specific Question0:13:57 - Human Trials0:16:10 - David Protein0:17:45 - Sydney Heart Study0:22:22 - Minnesota Coronary Experiment0:25:09 - Rose Corn Oil Trial0:27:29 - LA Veterans Study0:29:20 - Finnish Mental Hospital Study0:31:51 - STARS0:33:48 - Carbon Diet Coach0:34:48 - Analysis of Human RCTs0:35:57 - Mendelian Randomization0:44:15 - LDL Cholesterol and ApoB0:51:49 - Oxidation0:58:54 - Linoleic Acid1:02:02 - Seed Oil Processing1:10:06 - Frying in Seed Oils1:10:54 - Naturalistic Fallacy1:13:11 - SummarySHOW NOTEShttps://biolayne.com/podcasts/dr-layne-norton-podcast/seed-oils-the-evidence-based-deep-dive-episode-28
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  Bill Campbell: The Physique Enhancement Professor 11.05.2026 1godz 39min

  In this episode, Dr. Layne Norton sits down with Professor Bill Campbell, PhD — Director of the Performance & Physique Enhancement Laboratory at the University of South Florida and a leading researcher on body composition, high-protein diets, and resistance training adaptations.They discuss Bill’s high-protein studies in women (including physique athletes, contest prep, older adults, and time-restricted eating), sex differences in muscle growth and training adaptations, the menstrual cycle’s impact on performance, intermittent energy restriction, refeeds and diet breaks, and one major belief he completely changed his mind on (meal frequency).Packed with practical, evidence-based insights on optimizing body composition, fat loss, and strength.SPONSORS• Workout Builder – Customized training programs for all experience levels: https://biolayne.com/workout-builder• Team Biolayne – One-On-One Coaching: https://biolayne.com/online-coachingLAYNE'S COMPANIESCarbon Diet Coach: https://joincarbon.com/podcastOutwork Nutrition: https://outworknutrition.comREPS Research Review: https://biolayne.com/repsWorkout Builder: https://biolayne.com/workout-builderTeam Biolayne: https://biolayne.com/online-coachingPhysique Coaching Academy: https://physiquecoachingacademy.comFOLLOW LAYNEhttp://www.facebook.com/laynenortonhttp://www.twitter.com/biolaynehttp://www.instagram.com/biolayneTIMESTAMPS0:00:00 - Intro0:02:53 - Career History0:10:58 - What is the Focus of Your Lab?0:15:48 - Physique Coaching Academy0:16:49 - High vs Low Protein Study0:36:45 - REPS Research Review0:40:19 - Animal vs Human Studies0:43:22 - Importance of Leucine0:45:55 - Arginine & Growth Hormone0:49:14 - Should Women Train Differently0:54:34 - Device Trackers vs Subjective Feelings0:57:38 - Squats1:04:48 - Injuries1:07:41 - Training Volume1:13:30 - Refeeds and Diet Breaks1:32:32 - Meal Frequency1:36:25 - OutroSHOW NOTEShttps://biolayne.com/podcasts/dr-layne-norton-podcast/the-physique-enhancement-professor-with-bill-campbell-episode-27
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  AMA 04 - Cortisol, Seed Oils, Insulin, Biggest Loser and More 27.04.2026 54min

  In this listener Q&A, Layne dives deep into your most-asked questions on training, nutrition, and practical science. As always, he breaks down the actual research and gives no-BS, evidence-based takeaways you can actually use.Topics covered in this episode:• Does cortisol cause fat gain? Plus the impact of low-calorie dieting on cortisol• Sucralose and gut health – new research on dysbiosis, glucose/insulin levels, and the role of Blautia• Do seed oils increase inflammation? Comprehensive look at linoleic acid studies, systematic reviews, and clinical trials• Insulin, high-glycemic carbs, and fat storage – what do overfeeding studies actually show?• Is “natural” always better? The naturalistic fallacy explained• Is resistance training safe and effective for kids? What the science says for youth training• Creatine dosing for women vs. men – do women need a different amount?• Does cardio interfere with building muscle? Latest meta-analyses on concurrent training• Layne’s honest take on The Biggest Loser Netflix documentary• And more!Whether you’re chasing muscle gains, fat loss, or just cutting through the noise, this episode delivers the science-backed answers.SPONSORS• REPS - Research Explained in Practical Summaries: https://biolayne.com/reps• Workout Builder – Customized training programs for all experience levels: https://biolayne.com/workout-builderLAYNE'S COMPANIESCarbon Diet Coach: https://joincarbon.com/podcastOutwork Nutrition: https://outworknutrition.comREPS Research Review: https://biolayne.com/repsWorkout Builder: https://biolayne.com/workout-builderTeam Biolayne: https://biolayne.com/online-coachingPhysique Coaching Academy: https://physiquecoachingacademy.comFOLLOW LAYNEhttp://www.facebook.com/laynenortonhttp://www.twitter.com/biolaynehttp://www.instagram.com/biolayneTIMESTAMPS0:00:00 - Intro0:01:08 - Bulking/Cutting vs Recomp?0:08:00 - Does Cortisol Cause Fat Gain?0:11:51 - REPS Research Review0:12:41 - Does Sucralose Harm Your Gut?0:15:42 - Do Seed Oils Cause Inflammation?0:21:24 - Insulin and Fat Storage?0:25:48 - Workout Builder0:26:43 - Is Natural Always Better?0:31:42 - Can Women Over 60 Grow Their Glutes?0:33:31 - Is Resistance Training Healthy for Kids?0:35:53 - Dosing Creatine for Women vs Men?0:37:00 - Stacy Sims Content?0:40:30 - Alcohol and Body Composition?0:42:45 - Does Cardio Interfere with Building Muscle?0:45:57 - Thoughts on New Biggest Loser Documentary?0:54:04 - OutroSHOW NOTEShttps://biolayne.com/podcasts/dr-layne-norton-podcast/ama-04-cortisol-seed-oils-insulin-biggest-loser-and-more-episode-26
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  Blood Flow Restriction Training with Jeremy Loenneke 13.04.2026 2godz 18min

  In this episode, Dr. Layne Norton interviews Professor Jeremy Loenneke — one of the world’s top researchers on blood flow restriction training. They break down how BFR actually works, why metabolite accumulation appears to be the primary driver of its muscle-building effects, practical self-application techniques, and whether expensive cuffs are even necessary.Jeremy also shares his latest thinking on the hypertrophy vs. strength relationship, why muscle may be an underrated health marker (just like fat once was), his biggest concerns about the replication crisis in exercise science, and how he responds to critics who call BFR “gimmicky.”Whether you’re an athlete chasing gains, a coach, or just training smarter, this is a must-listen deep dive into the science and real-world application of BFR.SPONSORS• Workout Builder – Customized training programs for all experience levels: https://biolayne.com/workout-builder• Team Biolayne – One-On-One Coaching: https://biolayne.com/online-coachingLAYNE'S COMPANIESCarbon Diet Coach: https://joincarbon.com/podcastOutwork Nutrition: https://outworknutrition.comREPS Research Review: https://biolayne.com/repsWorkout Builder: https://biolayne.com/workout-builderTeam Biolayne: https://biolayne.com/online-coachingPhysique Coaching Academy: https://physiquecoachingacademy.comFOLLOW LAYNEhttp://www.facebook.com/laynenortonhttp://www.twitter.com/biolaynehttp://www.instagram.com/biolayneTIMESTAMPS0:00:00 - Intro0:05:27 - Background on BFR0:12:30 - BFR Effects0:18:38 - BFR Protocols0:23:18 - Workout Builder0:24:14 - Preferences = Consistency0:28:36 - BFR and Injuries0:31:39 - BFR vs Regular Training0:41:57 - Mechanisms1:04:51 - Team Biolayne1:05:43 - Training to Failure1:10:50 - Don’t Get Stuck in the Details1:16:35 - BFR Safety1:20:41 - Recommendations to Start1:27:30 - Strength vs Hypertrophy1:49:58 - Study Design & Replication2:04:14 - Final Question2:15:52 - OutroSHOW NOTEShttps://biolayne.com/podcasts/dr-layne-norton-podcast/
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  The Most Overhyped Supplements of All Time 30.03.2026 56min

  It’s here—the last episode of Dr. Layne Norton’s no-nonsense supplement series! In this finale, Layne takes a hard, evidence-based look at some of the most overhyped supplements in fitness and bodybuilding. He cuts through the marketing claims, examines the actual research, and tells you exactly what works, what doesn’t, and who (if anyone) should actually be spending money on these products.In this episode, Layne covers:BCAAs – Do they build muscle, boost strength, or speed recovery more than just eating enough total protein?HMB – Why the “like deca” claims from the ’90s never panned out, and what it actually does (and doesn’t) doGlutamine & Arginine – Poor bioavailability, gut-first metabolism, and why they rarely deliver the muscle-building or performance benefits promisedEcdysterone & Turkesterone – The “natural steroid” hype meets high-quality human RCTsElectrolytes – When they actually matter (and when plain water is sufficient)“Better” Creatine forms (CEE, buffered creatine, HCl, etc.) vs. good old Creatine Monohydrate – spoiler: you’re usually just paying 2–4× more for the same (or worse) resultsLayne breaks down the bold claims vs. reality for each supplement, explains what the science shows they actually do in the body, and identifies the very narrow populations who might see real benefit.Stop wasting money on supplements that underdeliver. Focus on what actually moves the needle.SPONSORS• Outwork Nutrition - Evidence-Based Supplements to Support Your Hard Work: https://outworknutrition.com• Carbon Diet Coach – 14 day free trial: https://joincarbon.com/podcastLAYNE'S COMPANIESCarbon Diet Coach: https://joincarbon.com/podcastOutwork Nutrition: https://outworknutrition.comREPS Research Review: https://biolayne.com/repsWorkout Builder: https://biolayne.com/workout-builderTeam Biolayne: https://biolayne.com/online-coachingPhysique Coaching Academy: https://physiquecoachingacademy.comFOLLOW LAYNEhttp://www.facebook.com/laynenortonhttp://www.twitter.com/biolaynehttp://www.instagram.com/biolayneTIMESTAMPS0:00:00 - Intro0:03:10 - BCAAs0:11:38 - HMB0:19:46 - Glutamine0:24:56 - Arginine0:31:10 - Ecdysterone and Turkesterone0:34:18 - Electrolytes0:42:32 - Alternate Forms of Creatine0:51:03 - Honorable Mentions0:55:42 - OutroSHOW NOTEShttps://biolayne.com/podcasts/dr-layne-norton-podcast/the-most-overhyped-supplements-of-all-time-episode-24
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  Supplement Series: Tier 2 16.03.2026 56min

  The Dr. Layne Norton Podcast is back with Part 2 of the highly anticipated Supplement Series! In Episode 23, Layne dives deep into his Tier 2 supplements — the ones with solid (but not quite elite) evidence for supporting strength, power, endurance, recovery, body composition, stress management, sleep, and overall training performance.Building on the Tier 1 foundations from Episode 22 (creatine, whey protein, and caffeine), Layne breaks down the science, mechanisms, optimal dosing, timing, safety profiles, and real-world takeaways for these promising options. No hype, just evidence-based insights to help you decide what's worth adding to your stack.In this episode, Layne covers:Ashwagandha — Boosts strength, lean mass, testosterone, recovery, sleep, and stress management as a powerful adaptogen.Betaine (Trimethylglycine) — Potential improvements in body composition, strength, power output, and recovery.Rhodiola Rosea — Enhances resistance training performance, endurance, VO2 max, fatigue resistance, recovery, and cognition.Citrulline (including Citrulline Malate) — Increases muscular endurance, reps to failure, nitric oxide production, and reduces fatigue.Beta-Alanine — Buffers acidity for better performance in high-intensity efforts (1–10 minutes), more reps in resistance training.Tart Cherry Extract — Reduces DOMS, speeds strength/power recovery, and lowers inflammation/oxidative stress markers.Melatonin — Improves sleep quality (with indirect benefits for body composition and recovery via better rest).Taurine — Supports endurance, acute power/strength, and recovery from muscle damage/DOMS.Carnitine — Aids recovery, reduces soreness, boosts power/volume, and may enhance high-intensity performance.Magnesium — Benefits exercise performance, recovery, and sleep — especially if you're deficient.Layne references key studies, meta-analyses, practical dosing protocols, side effects to watch for, and who might benefit most.Whether you're chasing PRs, better recovery, or optimized health, this episode cuts through the supplement noise with Layne's no-BS, science-first approach.SPONSORS• Outwork Nutrition - Evidence-Based Supplements to Support Your Hard Work: https://outworknutrition.com• David Protein - Buy 4 cartons, get 1 FREE at: https://davidprotein.com/pages/layneLAYNE'S COMPANIESCarbon Diet Coach: https://joincarbon.com/podcastOutwork Nutrition: https://outworknutrition.comREPS Research Review: https://biolayne.com/repsWorkout Builder: https://biolayne.com/workout-builderTeam Biolayne: https://biolayne.com/online-coachingPhysique Coaching Academy: https://physiquecoachingacademy.comFOLLOW LAYNEhttp://www.facebook.com/laynenortonhttp://www.twitter.com/biolaynehttp://www.instagram.com/biolayneTIMESTAMPS0:00:00 - Intro0:04:05 - Conflict of Interest0:05:17 - Ashwagandha0:13:52 - Outwork Nutrition0:15:28 - Betaine0:20:59 - Rhodiola Rosea0:25:04 - Citrulline0:30:46 - David Protein0:32:21 - Beta-Alanine0:37:26 - Tart Cherry0:42:18 - Melatonin0:45:24 - Taurine0:47:24 - L-Carnitine0:51:35 - Magnesium0:54:34 - OutroSHOW NOTEShttps://biolayne.com/podcasts/dr-layne-norton-podcast/supplement-series-tier-2-episode-23
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  Supplement Series: Tier 1 02.03.2026 1godz 7min

  The Dr. Layne Norton Podcast is back with the start of a brand-new Supplement Series! In Episode 22, Layne kicks things off by diving deep into his Tier 1 supplements — the ones with the strongest scientific evidence for real-world benefits in performance, body composition, strength, recovery, and even cognition.This episode covers the true MVPs that Layne considers essential (or close to it) for most people training hard:Creatine Monohydrate — Why it's called the most effective ergogenic aid ever, how it boosts lean mass, strength, repeated sprint/power performance, and even helps cognition (especially under stress like sleep deprivation). We bust myths about kidneys, water retention, and non-responders, plus practical dosing (5 g/day, loading optional).Whey Protein — The gold-standard for hitting leucine thresholds and maximizing muscle protein synthesis. How it supports lean mass gains, preserves muscle in a deficit, improves recovery and training volume over time — and why total daily protein matters way more than perfect timing.Caffeine — One of the most reliable acute performance boosters out there. It cranks up strength, power, endurance, repeated sprints, alertness, and reduces perceived effort — especially when fatigued. We cover optimal dosing (3–6 mg/kg), timing, habituation, sleep trade-offs, and who should be cautious.Layne breaks down the mechanisms, key meta-analyses, practical takeaways, dosing/timing strategies, safety profiles, and who might need to be careful with each one. No hype, no BS — just evidence-based insights to help you cut through the supplement noise.SPONSORS• Outwork Nutrition - Evidence-Based Supplements to Support Your Hard Work: https://outworknutrition.com• Carbon Diet Coach – 14 day free trial: https://joincarbon.com/podcastLAYNE'S COMPANIESCarbon Diet Coach: https://joincarbon.com/podcastOutwork Nutrition: https://outworknutrition.comREPS Research Review: https://biolayne.com/repsWorkout Builder: https://biolayne.com/workout-builderTeam Biolayne: https://biolayne.com/online-coachingPhysique Coaching Academy: https://physiquecoachingacademy.comFOLLOW LAYNEhttp://www.facebook.com/laynenortonhttp://www.twitter.com/biolaynehttp://www.instagram.com/biolayneTIMESTAMPS0:00:00 - Intro0:01:24 - Tier 1 Supplement List0:02:25 - Industry Shenanigans0:04:01 - Tier 1 Criteria0:04:56 - Conflicts of Interest0:09:10 - How Creatine Works0:13:09 - Creatine Physical Benefits0:19:55 - Outwork Nutrition0:21:22 - Creatine Physical Benefits Contd.0:23:48 - Creatine Cognitive Benefits0:27:23 - Creatine Safety0:30:51 - Forms of Creatine0:32:18 - How to Take Creatine0:34:15 - Creatine Non-Responders0:35:19 - Misc Considerations0:36:11 - Whey Protein Quality0:38:04 - Muscle Protein Synthesis0:39:09 - Whey Protein Research0:40:00 - Protein Intake0:42:27 - Protein Health and Safety0:43:16 - Forms of Whey Protein0:47:13 - Whey Protein Dosing0:49:05 - Misc Considerations0:50:42 - Carbon Diet Coach0:51:42 - How Caffeine Works0:53:23 - Research Outcomes0:57:03 - Timing/Dosing0:57:30 - Cognitive Effects0:58:06 - Health Considerations0:58:57 - Training Recommendations1:00:44 - More Dosing1:03:11 - Caffeine + Creatine1:04:18 - Misc Considerations1:05:10 - Closing Thoughts1:06:21 - OutroSHOW NOTEShttps://biolayne.com/podcasts/dr-layne-norton-podcast/supplement-series-tier-1-episode-22
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  The Science of Muscle Building with James Krieger 16.02.2026 2godz 1min

  In this episode, I’m joined by James Krieger, editor of REPS (Research Review for Exercise & Physique Science), to break down what the meta-analyses really say about building muscle.We cover:• The single most important driver of hypertrophy• The dose–response relationship between volume and muscle growth• Is there a cap to effective volume?• Training to failure: necessary or overrated?• Frequency: how often should you train a muscle?• Stretch-mediated hypertrophy and long-length partials• Why some volume studies appear to “disagree”If you’re tired of social media hot takes and want to understand what the totality of evidence actually shows, this episode is for you.James and I also discuss how we evaluate research quality and why context matters when interpreting studies, something we do every month inside the issues of REPS, where we break down the latest exercise and physique research so you don’t have to.If you want deeper dives into the actual studies discussed in this episode (and many more), check out REPS at https://biolayne.com/repsSPONSORS• REPS - Research Explained in Practical Summaries: https://biolayne.com/reps• Workout Builder – Customized training programs for all experience levels: https://biolayne.com/workout-builderLAYNE'S COMPANIESCarbon Diet Coach: https://joincarbon.com/podcastOutwork Nutrition: https://outworknutrition.comREPS Research Review: https://biolayne.com/repsWorkout Builder: https://biolayne.com/workout-builderTeam Biolayne: https://biolayne.com/online-coachingPhysique Coaching Academy: https://physiquecoachingacademy.comFOLLOW LAYNEhttp://www.facebook.com/laynenortonhttp://www.twitter.com/biolaynehttp://www.instagram.com/biolayneTIMESTAMPS0:00:00 - Intro0:02:39 - James Background0:04:01 - OG Message Boards0:06:24 - Who To Listen To0:15:01 - REPS0:15:53 - Hypertrophy0:26:02 - Compound vs Isolation Movements0:33:05 - Subjective Feelings on Training0:37:50 - Training Flexibility0:43:22 - Training Volume0:47:05 - Defining Sets0:51:59 - Volume Analysis1:02:27 - Research Challenges1:08:12 - Workout Builder1:09:08 - Study Discrepancies1:16:55 - High vs Low Volume1:22:40 - Time Constraints1:25:15 - Volume Cycling1:30:11 - Volume Adaptation1:34:37 - Range of Motion1:44:35 - What Have You Changed Your Mind On1:59:36 - OutroSHOW NOTEShttps://biolayne.com/podcasts/dr-layne-norton-podcast/the-science-of-muscle-building-with-james-krieger-episode-21
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  Study Deep Dive: Does Aspartame Increase Insulin? 02.02.2026 1godz 2min

  In this episode, Layne Norton, PhD, dissects the landmark 2025 systematic review & meta-analysis in Advances in Nutrition: "The Effects of Aspartame on Glucose, Insulin, and Appetite-Regulating Hormone Responses in Humans". (PMID: 40381807)This episode is perfect if you've heard claims like "diet soda spikes insulin," "artificial sweeteners cause diabetes," or "aspartame is toxic" — Layne uses this gold-standard review to separate science from fear-mongering.If you're into evidence-based nutrition, skeptical of viral health scares, or just want to know if your Diet Coke habit is secretly wrecking your metabolism — this episode has the receipts.Subscribe for more deep-dive breakdowns of the latest research, and drop a comment: Do you use aspartame? Has this changed your view?SPONSORS• Outwork Nutrition - Evidence-Based Supplements to Support Your Hard Work: https://outworknutrition.com• David Protein - Buy 4 cartons, get 1 FREE at: https://davidprotein.com/pages/layneLAYNE'S COMPANIESCarbon Diet Coach: https://joincarbon.com/podcastOutwork Nutrition: https://outworknutrition.comREPS Research Review: https://biolayne.com/repsWorkout Builder: https://biolayne.com/workout-builderTeam Biolayne: https://biolayne.com/online-coachingPhysique Coaching Academy: https://physiquecoachingacademy.comFOLLOW LAYNEhttp://www.facebook.com/laynenortonhttp://www.twitter.com/biolaynehttp://www.instagram.com/biolayneTIMESTAMPS0:00:00 - Intro0:02:53 - What is Aspartame0:05:15 - Health Claims0:11:26 - How Aspartame is Metabolized0:14:15 - HRCTs0:15:56 - Outwork Nutrition0:18:06 - Study Overview0:19:25 - Inclusion Criteria0:31:43 - Results0:40:38 - David Protein0:42:13 - Results Cont.0:49:51 - Discussion0:58:53 - ConclusionSHOW NOTEShttps://biolayne.com/podcasts/dr-layne-norton-podcast/study-deep-dive-does-aspartame-increase-insulin-episode-20
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  AMA 03 - New Food Guide Pyramid, Calories, Seed Oils, Hypertrophy and More 19.01.2026 1godz 3min

  In this wide-ranging Q&A episode, I tackle some of the most debated topics in nutrition, training, and health — and separate what the evidence actually shows from what’s just noise.We start with the new food guide pyramid and whether it reflects the current science, then zoom out to look at how the U.S. compares globally in calorie consumption. From there, we dig into protein intake — how much is really needed to support muscle mass and function in healthy adults, and what the best human data actually tells us.I spend a significant portion of the episode unpacking saturated fat, cardiovascular disease, and cholesterol. We walk through randomized trials, systematic reviews, Mendelian randomization data, and mechanistic evidence to explain why LDL and apolipoprotein B matter, how dietary fats influence cardiovascular risk, and why some popular narratives around butter, seed oils, and lipid oxidation don’t hold up when you zoom out to the totality of human evidence.I also answer practical questions on fat loss for people who feel burned out by calorie counting — what to do if tracking feels like a full-time job, where the most reliable calorie data actually comes from, and how to approach weight loss without falling into metabolic myths around insulin, glucose spikes, or arbitrary blood sugar cutoffs.On the training side, we talk about whether the general public should prioritize strength or hypertrophy, what the data says about strength as a predictor of longevity, machines versus free weights, optimal rep ranges for muscle growth, and why different loading schemes can all work when programmed correctly.I address common myths like creatine and hair loss, explain the biomechanics behind sumo versus conventional deadlifts (and why resetting between reps isn’t “cheating”), and share how I personally eat for health while still applying the same evidence-based principles I recommend to others.We wrap up with genetics and obesity — how much your genes matter, whether specific variants should change how you eat, and why most people don’t need genetically tailored macro ratios to make progress.If you’re tired of oversimplified takes, fear-based nutrition advice, and cherry-picked mechanisms, this episode is a deep dive into what the best human research actually says — and how to apply it in the real world.SPONSORS• Team Biolayne – One-On-One Coaching: https://biolayne.com/online-coaching• David Protein - Buy 4 cartons, get 1 FREE at: https://davidprotein.com/pages/layneLAYNE'S COMPANIESCarbon Diet Coach: https://joincarbon.com/podcastOutwork Nutrition: https://outworknutrition.comREPS Research Review: https://biolayne.com/repsWorkout Builder: https://biolayne.com/workout-builderTeam Biolayne: https://biolayne.com/online-coachingPhysique Coaching Academy: https://physiquecoachingacademy.comFOLLOW LAYNEhttp://www.facebook.com/laynenortonhttp://www.twitter.com/biolaynehttp://www.instagram.com/biolayneTIMESTAMPS0:00:00 - Intro0:00:48 - New Food Guide Pyramid0:10:46 - Counting Calories0:15:28 - Biolayne Coaching0:16:19 - Calorie Databases0:17:53 - Strength vs Hypertrophy0:20:16 - Diet for Optimal Health0:25:43 - Addressing Seed Oil Critique0:43:29 - David Bars0:45:03 - Genetics and Obesity0:47:02 - Glucose and Insulin0:50:46 - Machines vs Free Weights0:52:13 - Creatine and Hair Loss0:53:54 - Deadlift Form0:59:42 - Rep Range for Hypertrophy1:02:56 - OutroSHOW NOTEShttps://biolayne.com/podcasts/dr-layne-norton-podcast/ama-03-episode-19
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  The Keys to Building Muscle Part 2: NUTRITION 05.01.2026 1godz 15min

  Building muscle doesn’t happen in the gym alone. In Part 2 of this series, I break down the nutrition and supplementation variables that actually matter for maximizing muscle growth and which ones are overhyped or misunderstood.We start with protein: how much you really need, why protein quality matters, the role of essential amino acids and leucine in stimulating muscle protein synthesis, and how protein distribution across the day can influence results. I also dive into how protein needs change with age, why older adults require higher per-meal and daily protein intakes, and practical recommendations to offset age-related anabolic resistance.From there, we cover energy intake: how caloric deficits impair muscle protein synthesis, why massive surpluses don’t accelerate lean mass gains in trained lifters, and how to think about maintenance versus small surpluses depending on training status.Finally, I break down the supplements that are actually supported by strong evidence — including creatine and whey protein: what they do, how they work, and how to use them effectively. We also cover common factors that can sabotage muscle growth, like smoking, excessive alcohol, poor sleep, and inappropriate use of NSAIDs or high-dose antioxidants.If you want a clear, science-based framework for using nutrition and supplements to support muscle growth, without gimmicks or misinformation, then this episode is for you.SPONSORS• Carbon Diet Coach – 14 day free trial: https://joincarbon.com/podcast• Outwork Nutrition - Evidence-Based Supplements to Support Your Hard Work: https://outworknutrition.comLAYNE'S COMPANIESCarbon Diet Coach: https://joincarbon.com/podcastOutwork Nutrition: https://outworknutrition.comREPS Research Review: https://biolayne.com/repsWorkout Builder: https://biolayne.com/workout-builderTeam Biolayne: https://biolayne.com/online-coachingPhysique Coaching Academy: https://physiquecoachingacademy.comFOLLOW LAYNEhttp://www.facebook.com/laynenortonhttp://www.twitter.com/biolaynehttp://www.instagram.com/biolayneTIMESTAMPS0:00:00 - Intro0:05:02 - Most Important Thing0:05:35 - Protein Structure0:07:09 - Protein Digestion0:09:55 - Protein RDA0:10:40 - Nitrogen Balance0:12:24 - Muscle Turnover0:14:09 - Amino Acids0:19:35 - mTOR0:23:12 - Carbon Diet Coach0:24:12 - How Much Protein0:29:56 - Protein Distribution0:39:08 - Protein and Aging0:45:04 - Protein Quality0:50:50 - Outwork Nutrition0:52:17 - Calories1:01:23 - Supplements1:05:16 - Things to Avoid1:13:10 - OutroSHOW NOTEShttps://biolayne.com/podcasts/dr-layne-norton-podcast/keys-to-building-muscle-part-2-training-episode-18
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  The Keys to Building Muscle Part 1: TRAINING 15.12.2025 1godz 44min

  How do muscles actually grow — and what really matters for hypertrophy?In this episode, I break down muscle growth from the ground up, starting with muscle structure and working all the way through the practical training variables that actually drive hypertrophy.We cover how muscle fibers are built, why muscle cells are uniquely multi-nucleated, and how satellite cells and myonuclei influence growth potential and long-term adaptations (including the concept of “muscle memory”). From there, we dig into how resistance training shifts net protein balance, why muscle protein synthesis and breakdown both rise with training, and why hypertrophy is often delayed when people first start lifting.A major focus of this episode is mechanotransduction — how mechanical loading from resistance training is converted into chemical signals that stimulate muscle growth. We unpack what we know (and don’t know) about mTOR signaling, phosphatidic acid, kinase pathways, and why mechanical tension is the primary driver of hypertrophy.From there, the episode gets highly practical. We break down:• Why proximity to failure matters more than load• How volume really works (and why “dose-dependent” doesn’t mean linear)• The role of training frequency and how to distribute volume• Why stretch and lengthened positions matter for growth• Load and rep ranges for hypertrophy vs strength• Exercise selection, machines vs free weights, and compound vs isolation lifts• Rep tempo, intensity techniques, and what doesn’t meaningfully affect growth• Why systemic hormone spikes from training don’t predict hypertrophyI close with clear, evidence-based takeaways you can actually apply: how hard to train, how much volume most people need, when failure makes sense, how to structure exercises, and how to prioritize effort, recovery, and adherence over gimmicks.If you want a science-based framework for building muscle — without myths, hype, or unnecessary complexity — this episode lays it out step by step.SPONSORS• Workout Builder – Customized training programs for all experience levels: https://biolayne.com/workout-builder• Team Biolayne – One-On-One Coaching: https://biolayne.com/online-coachingLAYNE'S COMPANIESCarbon Diet Coach: https://joincarbon.com/podcastOutwork Nutrition: https://outworknutrition.comREPS Research Review: https://biolayne.com/repsWorkout Builder: https://biolayne.com/workout-builderTeam Biolayne: https://biolayne.com/online-coachingPhysique Coaching Academy: https://physiquecoachingacademy.comFOLLOW LAYNEhttp://www.facebook.com/laynenortonhttp://www.twitter.com/biolaynehttp://www.instagram.com/biolayneTIMESTAMPS0:00:00 - Intro0:04:53 - Muscle Function0:06:23 - Muscle Fibers0:10:48 - Satellite Cells0:13:47 - Myonuclei Fusion0:15:04 - Drug Testing Implications0:20:17 - Lifetime Natty0:21:14 - Trans Athletes0:24:02 - Workout Builder0:24:58 - Sarcomeres0:27:23 - Hypertrophy vs Hyperplasia0:30:06 - Increase in Muscle Cell Size0:31:00 - Net Protein Balance0:31:57 - Muscle Protein Breakdown0:37:52 - Mechanotransduction0:39:32 - Biochemical Explanation0:49:05 - Mechanical Tension0:50:06 - Training Intensity0:55:32 - Muscular Failure1:01:54 - Team Biolayne1:02:44 - Training Volume1:15:38 - Training Frequency1:20:45 - Muscle Stretch1:22:30 - Load & Reps1:26:42 - Exercise Selection & Order1:29:24 - Rep Tempo1:30:58 - Other Considerations1:33:15 - Systemic Hormones1:35:10 - Practical Takeaways1:41:56 - OutroSHOW NOTEShttps://biolayne.com/podcasts/dr-layne-norton-podcast/keys-to-building-muscle-part-1-training-episode-17