Metabolic Mastery

Episoder

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  Ep. 74 - Daniel Crumback: The Zoning Mistake: Why Your Heart Rate Zones May Be Wrong 06.10.2026 53min

  Get Daniel's PTAP Course: https://strategichealthperformance.inspire360.com/p/ptap-foundationsGet A Demo: https://korr.com/contact/video-demo/Most people buying a metabolic analyzer have no idea how much data they're leaving on the table. In this episode of Metabolic Mastery, hosts Dr. Marc Humbert and Dr. Cameron Garber sit down with Daniel Crumback, KORR's Director of International Sales and a certified exercise physiologist, chartered physiotherapist, and strength and conditioning specialist with 30 years of testing experience, to break down how to get the absolute most out of your cardio coach.They cover why VO2 max alone only tells half the story, the hidden difference between metabolic and ventilatory zoning methods, the testing mistakes that quietly wreck your data, and why retesting (not just testing) is where the real transformation happens.You Will Learn:Why VO2 max is just "the sexy thing to sell", and what data actually drives real programming decisionsThe critical difference between metabolic (RER-based) and ventilatory (VE/VO2, VE/VCO2) zoning methods, and why they can produce zones 20-30 beats apartHow to identify a client's true physiological limiter (cardiovascular, respiratory, or metabolic) and zone accordinglyWhy "peak" and "max" aren't the same thing, and how missing a true max (RER of 1.15+) leaves critical zone-five data off the tableThe proper testing protocol: a 5-minute low-intensity warm-up, correctly sized increments, and tests lasting 9-12 minutesWhy RMR and VO2 max testing should never be done in isolation from each otherHow VO2 pulse and peak VO2/breathing frequency can reveal undiagnosed cardiac and respiratory issuesWhy retesting, not a one-and-done test, is what truly drives client retention and long-term resultsHow mismatched fat/carb utilization at rest vs. during exercise points directly to nutrition issues
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  Ep. 72 - How to Warm Up Clients for Accurate VO2 Max & Metabolic Testing 22.09.2026 50min

  Get A Demo: https://korr.com/contact/video-demo/Should every client do a warm-up before a VO2 max test? In this episode of Metabolic Mastery, Dr. Marc Humbert and Dr. Cameron Garber tackle a question that's surprisingly underexplored in the exercise science literature: how to properly warm up a client before metabolic testing.They break down the three main purposes of a warm-up — transition, familiarization, and priming — and introduce their practical R.E.A.D.Y. framework to help practitioners decide exactly how much (or how little) warm-up a given client needs. From elite athletes to deconditioned beginners, from ramp protocols to fat max testing, Marc and Cameron walk through real-world scenarios, mask familiarization tips, and how to use heart rate as a readiness indicator before you ever hit "start" on the test.You Will Learn:The three primary purposes of a warm-up: transition, familiarization, and primingWhy "it depends" is the right answer for whether a client needs a warm-upThe R.E.A.D.Y. framework: Reason, Estimate, Acclimate, Dose, and confirming they're readyHow to use heart rate stability as a signal that a client is ready to begin testingWhy building the warm-up into the protocol can save time without sacrificing data qualityTips for helping clients get comfortable with the mask and equipment before testing startsHow to document warm-up protocols in Cardio Coach software for consistent repeat testingWhen elite athletes need a separate warm-up vs. when to skip it for deconditioned clients
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  Ep. 73-Dr.Thomas George: The Doctor Who Lost 120 Pounds:Inside the Science of Adaptive Thermogenesis 29.09.2026 1t 12min

  Get A Demo: https://korr.com/contact/video-demo/Dr. Thomas George didn't set out to become an obesity medicine specialist — a traumatic brain injury and a 120-pound weight gain got him there. In this episode of Metabolic Mastery, Dr. Mark Humbert and Dr. Cameron Garber sit down with Dr. George, founder of Wellspring Weight and Wellness, to unpack the science and story behind sustainable weight management.Dr. George shares his own journey from competitive martial artist to 330 pounds and back, and how a neuroendocrinologist's diagnosis changed the way he sees — and treats — obesity. The conversation dives deep into adipocyte biology, why "it's not about the weight," the real data behind adaptive thermogenesis, and why so many patients on GLP-1 medications still hit frustrating plateaus.You Will Learn:Why obesity is best understood as a "disease of diseases" and what that means for treatmentHow the personal fat threshold and adipocyte hypertrophy drive metabolic dysfunctionWhat resting energy expenditure testing reveals about adaptive thermogenesis — and why its effects can persist up to six yearsWhy GLP-1/GIP medications don't fix metabolism on their own, and what's missing from many prescribing plansHow building metabolically healthy muscle protects against weight regain and sarcopeniaWhy exercise matters more for maintenance than for initial weight lossHow cultural food patterns (Mediterranean, Inuit, Hispanic heritage diets) inform sustainable eatingWhy calorie quality, density, and dosage matter more than any single "diet"Subscribe: https://www.youtube.com/@korrmed
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  Ep. 70 - Part 2: How to Design the Perfect HIIT Workout (Using Real VO2 Max Data) 08.09.2026 59min

  Get A Demo: https://korr.com/contact/video-demo/In part two of this two-part series, Metabolic Mastery hosts Dr. Marc Humbert and Dr. Cameron Garber shift gears from low intensity training to high intensity — breaking down exactly what HIIT does physiologically, why it works, and how to design intervals that actually match your goals.They start by revisiting the "three zone" model (comfortable, comfortably uncomfortable, and uncomfortable) and explain why moderate intensity — the "no progress zone" — often doesn't drive much adaptation for people who already live there. From there, they dig into the real benefits of high intensity work: rapid VO2 max improvements, stronger cardiovascular pumping, better lactate shuttling, and improved top-end speed and power.A major focus of this episode is debunking the lactic acid myth — lactate isn't a waste product causing muscle burn, it's a valuable fuel source, and understanding how it's produced, transported, and used is key to designing smarter workouts. Marc and Cameron also walk through the "three dials" (oxidative, glycolytic, neuromuscular) and "three clocks" (time under load, interval length, recovery time) framework for designing HIIT workouts with intention — plus why heart rate alone isn't a reliable guide at high intensities, and how VO2 max testing data can pinpoint the exact speed or power to target for real adaptation.You Will Learn:The difference between "comfortable," "comfortably uncomfortable," and "uncomfortable" training zones — and why the middle zone often delivers the least returnWhy lactate is a fuel source, not a fatigue-causing waste product — and how the body actually clears and uses itThe real benefits of high intensity interval training, including rapid VO2 max gains and improved mitochondrial efficiencyHow to use the "three dials" (oxidative, glycolytic, neuromuscular) to design intervals for specific adaptationsWhy heart rate lags at high intensity and why speed/power targets (from VO2 max testing) are more reliableHow interval length and recovery time change which energy systems you're actually trainingWhy "short term hard, long term easy" beats chasing quick fixes when it comes to fitness and healthHow to avoid junk volume by matching your training to your actual physiology instead of generic templatesThe difference between HIIT-style intervals and longer threshold work — and when to use each
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  Ep. 71 - Jody Nelson: Why "Healthy" Habits Aren't Working: A Postpartum VO2 Max Case Study 15.09.2026 49min

  Get A Demo: https://korr.com/contact/video-demo/On this episode of Metabolic Mastery, hosts Dr. Marc Humbert and Dr. Cameron Garber are joined by Jody Nelson — KORR's resident metabolic testing expert with a decade of experience and a degree in exercise science — to break down a real client case study.The client: an otherwise fit woman, 18 months postpartum, doing everything "right" — solid nutrition, consistent low-intensity walking — yet stuck in a frustrating weight loss plateau. Her VO2 max test revealed something unexpected: a surprisingly narrow fat-burning zone, a rapid heart rate spike when transitioning from walking to running, and a respiratory pattern that told a much bigger story than the numbers alone.Marc, Cameron, and Jody walk through the respiratory rate and tidal volume graphs in real time, showing how early-test hyperventilation and anxiety can skew substrate utilization data — and why the device is almost never "wrong." They dig into the difference between being fit and being healthy, why perceived exertion is an unreliable guide, and how major hormonal shifts (postpartum, pregnancy, menopause) can scramble a client's ability to accurately read their own body.You Will Learn:Why a narrow fat-burning zone doesn't always mean poor metabolic health — and what else could be going onHow to read respiratory rate and tidal volume graphs to spot hyperventilation and test anxietyWhy "the device is broken" is almost never the right conclusion when a test result looks unusualThe critical difference between being cardiovascularly fit and being metabolically/physically healthyWhy perceived exertion is an unreliable training guide and how heart rate data corrects itHow hormonal changes during postpartum, pregnancy, and menopause affect metabolic test resultsWhy testing what you intend to measure (and training for the adaptations you want) mattersHow to ask better follow-up questions instead of jumping to blood work or invasive testingWhy "fit" doesn't always mean "healthy" — and what that means for injury risk and longevity
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  Ep. 70 - Part 1: The Best Workout Doesn’t Exist Here’s What Works Instead 01.09.2026 54min

  Get A Demo:https://korr.com/contact/video-demo/Is Zone 2 training the answer or should you spend your limited workout time doing high-intensity intervals? The research can make almost any popular workout sound like the best option, but that advice often overlooks the most important variable: the individual doing the training.In this episode of Metabolic Mastery, Dr. Marc Humbert and Dr. Cameron Garber explain why effective exercise prescription begins with your goals, physiology, injury history, available time, recovery capacity, and current fitness. They break down how the body’s energy systems work together, why heart rate zone terminology creates confusion, and how social media can turn narrow research findings into sweeping recommendations.You’ll also learn how frequency, duration, and intensity shape an effective training plan; why progressive overload must be balanced with recovery; and what low-intensity exercise uniquely contributes to aerobic capacity, mitochondrial function, and consistency. Marc and Cameron also discuss how metabolic testing with CardioCoach can provide individualized data for selecting the training methods most relevant to a person’s needs.The goal is not to choose the winning exercise camp. It is to find the right combination—and the right dose—for the person in front of you.What You Will LearnWhy there is no single best workout for every person or goalHow goals, time, recovery, and injury history influence exercise selectionWhy the body’s energy systems behave more like dials than switchesWhat different heart rate zone models mean when they refer to “Zone 2”How social media can overgeneralize narrowly focused exercise researchWhy frequency and duration often matter before increasing intensityHow progressive overload drives adaptation—and when training becomes too muchWhat low-intensity exercise does for aerobic metabolism and mitochondrial functionWhy moderate-intensity training may produce fewer new adaptations for some peopleHow metabolic testing can support a more personalized exercise prescriptionChapters00:00 Is there a best workout?02:23 Why popular workouts become universal recommendations04:45 Building a personalized exercise prescription07:00 Energy systems work together09:28 How the body uses different fuels11:55 Matching energy systems to your goals14:18 Why “Zone 2” can mean different things16:34 What HIIT research does—and does not—tell us18:55 Frequency, duration, and intensity21:19 How your training history changes your starting point23:36 Looking beyond fitness advice on social media26:02 Adapting exercise to individual limitations30:43 Treating exercise like a precise prescription32:59 Specific adaptation and progressive overload35:08 Finding the right training dose37:31 The benefits of low-intensity exercise39:49 Volume, adaptation, and injury risk42:08 Balancing training stimulus with recovery44:34 The limitations of moderate-intensity training46:59 Choosing intensity based on time and goals49:23 Progressing from walking to higher intensity51:49 Using individualized data to guide training54:11 Stop choosing camps and start choosing the right dose
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  Ep. 69 - Rethinking Calories & Metabolism with Dr. Carol Ireton Jones 25.08.2026 1t 26min

  Get A Demo: https://korr.com/contact/video-demo/The conversation begins with an introduction and background, followed by a discussion of Carol Ireton-Jones's career journey and development. The conversation then delves into research and mentorship, followed by a focus on nutrition and dietary practices. Finally, the discussion explores the concept of food as fuel and satisfaction. The conversation covers the impact of environment on food choices, the role of nutrition in GI health, and the process of creating educational resources for dietitians. It emphasizes the importance of understanding individual health history, financial constraints, and the influence of supermarket environments on food choices. Additionally, it explores the management of GI symptoms, the impact of GI disorders on quality of life, and the role of psychology in GI health. The conversation also delves into the process of creating textbooks and the impact of academic and clinical books on nutrition and GI health. The conversation covered the importance of expertise and nuance in health and nutrition, the value of admitting uncertainty, myths and misinformation in nutrition, challenges of weight loss medications, and how to connect with the expert. The discussion emphasized the need for a multidisciplinary approach to weight loss and the impact of misinformation on health and quality of life.TakeawaysCareer development in nutrition and dieteticsImportance of research and mentorship in the fieldUnderstanding food as fuel and satisfaction Understanding the influence of environment on food choicesThe role of nutrition in managing GI health Admitting uncertainty earns trust and respectIndividualized dietary recommendations are crucial for healthA multidisciplinary approach is essential for sustainable weight lossChapters00:00 Introduction and Background05:22 Career Journey and Development13:15 Research and Mentorship20:31 Nutrition and Dietary Practices27:26 Food as Fuel and Satisfaction29:55 The Impact of Environment on Food Choices36:31 Nutrition and GI Health52:47 Creating Educational Resources for Dietitians01:01:40 Expertise and Nuance in Health and Nutrition01:06:01 The Importance of Admitting Uncertainty01:13:20 Myths and Misinformation in Nutrition01:25:33 Challenges of Weight Loss Medications01:30:01 Connecting with the Expert
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  Ep. 68 - Muscle Fiber Types & Training: How to Trigger the Right Adaptations for Your Goals 18.08.2026 47min

  Get A Demo: https://korr.com/contact/video-demo/Ever wonder what's actually changing in your body when VO2 max stays flat but your performance improves? In this episode, we break down the hidden adaptations happening at the biochemical, cellular, and tissue levels—and why patience with your training matters more than you think.We dive deep into energy systems (phosphocreatine, glycolytic, and oxidative pathways), explore how different muscle fiber types adapt to training stress, and reveal why rest intervals between workouts can completely change your results. Plus, discover why central fatigue, sleep, and nutrition are often the real limiting factors in your performance.You Will Learn:What metabolic changes occur BEFORE you see improvements in VO2 maxHow the three energy systems work and which training style targets each oneWhy rest intervals between sets determine whether you build endurance or powerThe critical role of muscle fiber type adaptations in athletic performanceHow sleep deprivation can sabotage your training adaptations (even when everything else is perfect)Why your training plateau might actually be a lifestyle factor, not a programming issueThe difference between peripheral fatigue and central nervous system fatigueHow to individualize training based on your unique physiology and constraintsThe importance of metabolic testing beyond just VO2 max numbersPractical frameworks for designing training that actually produces results
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  Ep. 67 - The 6 Pillars of Health: Reverse Aging Without Extreme Exercise 11.08.2026 56min

  Get A Demo: https://korr.com/contact/video-demo/Is maintenance really possible, or is it a lie? In this episode, we debunk the myth that doing the same fitness routine forever keeps you healthy. Discover why progressive overload matters more than you think, and how the SAID principle (specific adaptation to imposed demands) explains why your body adapts—or declines—based on the demands you place on it.We explore the six pillars of sustainable health, real-world examples of staying young at 90+, and why metabolic testing is your crystal ball for future fitness. Learn how to design a maintenance program that actually works, prevent the 10% VO2 max decline per decade, and combat muscle loss with actionable strategies.You Will Learn:Why "maintenance" requires continuous progression, not repetitionHow the SAID principle drives aging and fitness adaptationsThe six pillars of health and how to optimize each oneReal data: VO2 max, muscle mass, and metabolic rate changes with ageWhy activity levels matter more than genetics for longevityHow metabolic testing reveals your fitness future and prevents burnoutPractical strategies to stay active across all life stagesWhy your 93-year-old neighbor stays younger than people half his age
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  Ep. 66 - VO2 Max vs VLAMax: The Missing Piece in Your Training Program with Sebastian Weber 04.08.2026 57min

  Learn More From Sebastian: inscyd.comGet A Demo: https://korr.com/contact/video-demo/Join hosts Dr. Marc Humbert and Dr. Cameron Garber as we explore advanced metabolic testing, energy systems training, and performance optimization with industry-leading experts.In this episode, we dive deep into energy metabolism with Sebastian Weber, founder of Inside and renowned sports scientist. Discover why your current training zones might be limiting your progress, how lactate testing reveals hidden training insights, and the practical applications that separate elite athletes from everyone else.You Will Learn:Why standardized training zones fail (and what actually works)The difference between VO2 Max and VLAMax — and why both matterHow lactate production and clearance determine race strategyMuscle fiber recruitment patterns and why you can't neglect glycolytic powerReal case studies: Programming for HyROX athletes, cyclists, and endurance performersThe truth about fasted training, periodization, and training variationHow metabolic data creates a "crystal ball" into what athletes have been doingWhy understanding the mechanism behind training beats following trendsPerfect for coaches, athletes, fitness professionals, and anyone serious about optimizing performance through science.
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  Ep. 64 - The VO2 Revolution in Performance & Longevity with Stephen Olson of Benchmark Body Metrics 21.07.2026 1t

  Follow Stephen:Instagram: _stephenolsonGet A Demo: https://korr.com/contact/video-demo/In this episode, Cameron Garber dives deep into metabolic testing with Stephen Olson, founder of Benchmark Body Metrics. Discover why your smartwatch's VO2 estimate might be 20% off, how to build an aerobic base that transforms endurance performance, and the often-overlooked breathing patterns that limit fitness gains.From testing Everest summiteers to diagnosing why runners plateau despite consistent training, Stephen reveals the clinical secrets that separate generic fitness advice from data-driven results.You Will Learn:Why VO2 max correlates with longevity (and what it actually means)The 3 metabolic testing methods that replace guesswork in your training programHow to identify your true fat-burning zone—without an expensive deviceThe respiratory limitation that cost one Boston Marathon qualifier 2 years of progressWhy testing yourself 200+ times is the fastest path to coaching masteryHow to use metabolic data to sell premium coaching packages (business angle)The fat oxidation graph that makes clients immediately "get" their training zonesWhy 95% of people will choose premium packages when you show them this data first
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  Ep. 65 - Is VO2 Max Testing Just a Fitness Fad? (The Truth) 28.07.2026 1t 6min

  Get A Demo: https://korr.com/contact/video-demo/Is VO2 max testing the real deal, or is it just another fitness fad riding a social media wave? In this episode of Metabolic Mastery, Dr. Marc Humbert and Dr. Cameron Garber pull from their "Fitness Fad Decoder" framework 10 practical questions anyone can use to separate real, sustainable science from hype and apply them directly to VO2 max testing, zone training, and cardiopulmonary exercise testing (CPET).They break down why VO2 max is a powerful, well-validated number, but a dangerous one to chase in isolation and what actually determines whether VO2 max testing will help you build lasting fitness or just become this decade's fleeting trend.You Will Learn:The 10-question "Fitness Fad Decoder" framework for evaluating any health or fitness trendWhy VO2 max is a great indicator of fitness but not a complete picture of health or longevityThe difference between population-based heart rate zones and physiology-based training zonesWhy chasing a single VO2 max score can actually increase injury and burnout riskHow fat oxidation (fat-burn zone) differs from fat loss — and why the two get confusedWhat determines whether high-intensity training like the Norwegian 4x4 is right for you right nowHow symptom-limited and submaximal testing can safely inform training for nearly any populationWhy cardiovascular reserve and muscle mass both matter for long-term health, not just VO2 maxHow to evaluate research claims and identify influencer overclaims around fitness trendsWhy investing in accurate metabolic testing may be one of the highest-ROI decisions for your health or your practice
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  Ep. 63 - Why Your Smartwatch's VO2 Max Is Wrong With Daniel Crumback 14.07.2026 1t 10min

  Get A Demo: https://korr.com/contact/video-demo/Wearables and influencers have made VO2 max a household term but most of what's being said about it is misleading, oversimplified, or flat-out wrong. In this episode, Dr. Marc Humbert sits down with Daniel Crumback Director of International Sales at KORR, certified exercise physiologist, chartered physiotherapist, and strength and conditioning specialist to cut through the noise around VO2 max, zone training, and metabolic testing.Daniel breaks down why devices measuring O2 only can't actually calculate a true VO2 max, why a high VO2 max doesn't mean someone is metabolically healthy, and how misapplied protocols like the Norwegian 4x4 can do more harm than good when they ignore an individual's actual limiters. Using a real case study a high-performing executive whose cardiovascular numbers looked great but whose metabolic health was quietly falling apart Daniel shows why testing without proper analysis is nearly worthless.You Will Learn:Why VO2 max and VO2 peak are not the same thing, and why that distinction mattersWhy O2-only devices can't truly measure VO2 max (and what gets lost in the algorithm)How to identify which system — cardiovascular, respiratory, or metabolic — is actually limiting performanceWhy "zone two" and "zone five" training aren't competing philosophies but serve different physiological purposesWhat near-infrared spectroscopy (NIRS) can and can't tell you about performanceWhy lactate testing has real limits — and where marketing claims cross into dishonestyHow AI-generated fitness advice can sound convincing while being physiologically inaccurateWhy testing to the modality (rather than testing to find true limitations) leads to bad programmingHow proper zoning through metabolic testing can prevent long-term issues like metabolic diseaseWhat separates a trustworthy fitness expert from an untrustworthy one (hint: they say "it depends")
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  Ep. 61 - Why Research Alone Can't Save You: Applying Science to YOUR Body (N of 1 Explained) 30.06.2026 1t 8min

  Get A Demo: https://korr.com/contact/video-demo/ In this episode of Metabolic Mastery, hosts Dr. Marc Humbert and Dr. Cameron Garber tackle one of the most misunderstood challenges in health and fitness: how to take population-based research and actually apply it to the individual in front of you — the "N of 1." With an overwhelming flood of new studies published daily, it's easy to either over-rely on research or dismiss it entirely. Marc and Cameron walk through a practical framework for reading research critically, understanding study design, and using metabolic testing data — including VO2 max and resting metabolic rate — to personalize care and training in the real world.You Will Learn:What "N of 1" means and why it matters for your health and trainingHow to evaluate research quality, including study design, population relevance, and statistical vs. clinical significanceWhy your VO2 max or RMR result may look "normal" but still be telling an important story about your individual trajectoryThe difference between a research roadmap and a blueprint — and how to stop confusing the twoHow Bayesian reasoning can help you update your beliefs without flip-flopping on every new studyWhy placebo effect, natural disease history, and confirmation bias can fool even experienced cliniciansHow the "evidence-based medicine funnel" works: best available research → clinical expertise → individual goals and constraintsReal examples of how metabolic testing reveals outliers that population averages would completely missWhy effect size matters just as much as statistical significance when evaluating any interventionHow to run your own mini N of 1 experiments over time using repeat metabolic testingFollow KORR:Instagram: https://www.instagram.com/korrmedical/ Facebook: https://www.facebook.com/korrmedical/ LinkedIn: https://www.linkedin.com/company/korrmedicalhttps://korr.com/ Listen to the Metabolic Mastery Podcast:Apple Podcast: https://podcasts.apple.com/us/podcast/metabolic-mastery/id1812972674 Spotify: https://open.spotify.com/show/2sgLMFv1Z8DwEz87yUpapI?si=29a177a6c6ca4ed4 YouTube: https://www.youtube.com/@korrmed/podcasts YouTube Music: https://music.youtube.com/playlist?list=PLVCRWXBDdFo_S0OeaAsPv8xTnfajTLc75&si=d4wVUA0jqajkbukB Amazon: https://music.amazon.com/podcasts/d76834b7-c11a-485f-8010-32b490d49e57/metabolic-mastery
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  Ep. 62 - How We Helped a Injured Runner Lose 20 Lbs Without a Weight Loss Program (Real Case Study) 07.07.2026 1t 11min

  In this episode of Metabolic Mastery, Dr. Marc Humbert and Dr. Cameron Garber walk through a real-world case study of a female runner in her 40s one who was stuck in a cycle of injuries, told to stop running, and struggling to lose weight despite years of effort. Using resting metabolic rate (RMR) testing, VO2 max data, and evidence-based exercise prescription, they break down exactly how they designed a program focused on injury prevention and performance, and how weight loss followed naturally as a byproduct.You Will Learn:Why telling injured runners to "rest it away" creates a vicious cycle that destroys tissue capacity over timeHow RMR data revealed this client preserved muscle mass during 12%+ body weight lossWhy metabolic adaptation causes RMR to drop 5–30% beyond what fat loss alone explains and how to track itThe load vs. capacity framework that allowed this client to run every single day for a year injury-freeHow Zone 2 training reduced injury risk while actually improving race paces at age 41Why adherence not the "optimal" program is the single biggest predictor of weight loss successHow protein intake (1.6g/kg) and resistance training protect fat-free mass during weight lossThe danger of false dichotomies in fitness (HIIT vs. Zone 2, cardio vs. strength) and why both are neededWhy bone stress injuries are usually an under-fueling problem, not an overuse problemHow to use metabolic retesting to iterate your coaching when results aren't going as expected
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  Ep. 46 - How Modern VO2 Testing Helps Clinics, Gyms, and Coaches 17.03.2026 1t 4min

  Get A Demo: https://korr.com/contact/video-demo/ In this episode of Metabolic Mastery, Dr. Marc Humbert and Dr. Cameron Garber break down how VO2 max testing has evolved from a bulky, university-lab-only tool into a practical, clinic- and gym-ready system that can transform both client outcomes and the way health and fitness professionals operate. They explain why VO2 max is one of the strongest predictors of long-term health, how modern metabolic testing goes far beyond a single score, and why understanding things like fat burning, carbohydrate use, cardiovascular fitness, muscular health, and recovery capacity gives a much more complete picture of human performance. Using real case examples, they show how testing can uncover hidden problems, guide better training and nutrition decisions, and help create personalized programs that actually fit the individual instead of relying on generic formulas or wearable estimates. They also explore what makes a quality metabolic cart accurate, why calibration and system design matter, and how better data leads to better health, better coaching, and better outcomes. What You Will Learn Why VO2 max is such a powerful predictor of health and longevity What has changed in VO2 max testing over the years Why modern metabolic testing is now practical for clinics, gyms, and health clubs Why VO2 testing is about much more than just one number How substrate use helps reveal fat burning and carbohydrate burning patterns Why both strength training and cardio matter for long-term health How metabolic testing helps personalize exercise and nutrition plans Why averages, formulas, and wearables can miss what an individual really needs What to look for in an accurate metabolic testing system How better testing can help people live healthier, more independent lives longer Follow KORR: Instagram: https://www.instagram.com/korrmedical/  Facebook: https://www.facebook.com/korrmedical/  LinkedIn: https://www.linkedin.com/company/korrmedical https://korr.com/  Listen to the Metabolic Mastery Podcast: Apple Podcast: https://podcasts.apple.com/us/podcast/metabolic-mastery/id1812972674  Spotify: https://open.spotify.com/show/2sgLMFv1Z8DwEz87yUpapI?si=29a177a6c6ca4ed4  YouTube: https://www.youtube.com/@korrmed/podcasts  YouTube Music: https://music.youtube.com/playlist?list=PLVCRWXBDdFo_S0OeaAsPv8xTnfajTLc75&si=d4wVUA0jqajkbukB  Amazon: https://music.amazon.com/podcasts/d76834b7-c11a-485f-8010-32b490d49e57/metabolic-mastery  
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  Ep. 41 - Stop Selling Features Start Selling Outcomes With Greg Marshall 10.02.2026 1t 24min

  Get A Demo: https://korr.com/contact/video-demo/ In this episode of Metabolic Mastery, Dr. Marc Humbert and Dr. Cameron Garber sit down with Greg Marshall, founder of Fitcher Marketing, to talk about the part of health business that most clinicians avoid: selling. Greg breaks down why "getting more leads" is the wrong target (sales are the target), why great selling is really leadership + empathy, and how to use question-based selling to help people move forward without pressure or gimmicks. They also connect it directly to metabolic testing: if VO₂ max is a "vital sign," then marketing these services isn't hype — it's getting the right message to the people who need it. You'll hear practical frameworks like going three layers deep, addressing the emotion behind objections (warranty, price, "I need to think about it"), and why your best long-term clients are often the "hardest" initial sales. What you will learn Why "more leads" doesn't matter if it doesn't convert into revenue The mindset shift from "selling" to selling to help How to use question-based selling to let clients persuade themselves A simple way to neutralize "I need to think about it" without being pushy How to uncover the real reason behind price, spouse, and warranty objections Why discounting too fast can actually "cheat" the customer How to sell high-ticket health services ethically by selling outcomes, not features How to create a "start small, build the muscle" spending plan for marketing/ad budgets Why congruence (your real personality + core values) sells better than scripts How better selling improves compliance in clinic-based programs   Follow KORR: Instagram: https://www.instagram.com/korrmedical/  Facebook: https://www.facebook.com/korrmedical/  LinkedIn: https://www.linkedin.com/company/korrmedical https://korr.com/  Listen to the Metabolic Mastery Podcast: Apple Podcast: https://podcasts.apple.com/us/podcast/metabolic-mastery/id1812972674  Spotify: https://open.spotify.com/show/2sgLMFv1Z8DwEz87yUpapI?si=29a177a6c6ca4ed4  YouTube: https://www.youtube.com/@korrmed/podcasts  YouTube Music: https://music.youtube.com/playlist?list=PLVCRWXBDdFo_S0OeaAsPv8xTnfajTLc75&si=d4wVUA0jqajkbukB  Amazon: https://music.amazon.com/podcasts/d76834b7-c11a-485f-8010-32b490d49e57/metabolic-mastery  
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  Ep. 36 - Biomarkers 101: Turning Health Data Into Better Decisions 06.01.2026 42min

  Get A Demo: https://korr.com/contact/video-demo/ Biomarkers are everywhere in health, fitness, and wearable technology—but more data doesn't always mean better insight. In this episode of Metabolic Mastery, Dr. Marc Humbert and Dr. Cameron Garber break down what biomarkers actually are, why not all biomarkers are created equal, and how misleading metrics can obscure meaningful health decisions. The conversation cuts through buzzwords like "cellular fitness," "biological age," and proprietary health scores to explain the difference between measured, calculated, and extrapolated biomarkers. You'll learn why standardized testing conditions matter, how poor data can lead to decision paralysis, and why the best biomarkers don't give answers—they help you ask better questions. If you've ever wondered whether your health data is actionable or just decoration, this episode provides a clear framework for evaluating biomarkers and using them responsibly to improve real-world health outcomes. What You'll Learn What a biomarker actually is—and why definitions matter The three tiers of biomarkers: measured, calculated, and extrapolated Why more biomarkers do not automatically mean better insight How marketing-driven health scores can mislead patients and clinicians Why VO₂ max is a powerful biomarker—and where its limits are The importance of standardized testing conditions for repeatable results How wearables can create anxiety and decision paralysis when misused Why biomarkers should reduce uncertainty, not add noise How good data leads to better questions—not instant answers A practical framework for deciding which biomarkers are truly useful  Follow KORR: Instagram: https://www.instagram.com/korrmedical/  Facebook: https://www.facebook.com/korrmedical/  LinkedIn: https://www.linkedin.com/company/korrmedical https://korr.com/  Listen to the Metabolic Mastery Podcast: Apple Podcast: https://podcasts.apple.com/us/podcast/metabolic-mastery/id1812972674  Spotify: https://open.spotify.com/show/2sgLMFv1Z8DwEz87yUpapI?si=29a177a6c6ca4ed4  YouTube: https://www.youtube.com/@korrmed/podcasts  YouTube Music: https://music.youtube.com/playlist?list=PLVCRWXBDdFo_S0OeaAsPv8xTnfajTLc75&si=d4wVUA0jqajkbukB  Amazon: https://music.amazon.com/podcasts/d76834b7-c11a-485f-8010-32b490d49e57/metabolic-mastery  
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  Ep. 35 - Why New Year Fitness Goals Fail and How Metabolic Testing Fixes It 30.12.2025 1t 6min

  Get A Demo: https://korr.com/contact/video-demo/ In this episode of Metabolic Mastery, Dr. Marc Humbert and Dr. Cameron Garber break down why metabolic testing is one of the most powerful tools for improving health, fitness, and longevity—regardless of your current fitness level. From beginners restarting after years away from exercise to advanced athletes stuck in cycles of injury or plateau, this conversation explains why relying on generic programs, social media workouts, or willpower alone often leads to burnout, frustration, and inconsistent results. The doctors explain why VO2 max, while valuable, tells only part of the story—and how comprehensive metabolic testing reveals how your muscles, heart, lungs, and metabolism actually work together. With the right baseline data, fitness becomes personalized, measurable, and sustainable. If you're tired of guessing, restarting every January, or following plans that don't fit your body or lifestyle, this episode shows how better data leads to better decisions—and better outcomes. What You Will Learn Why motivation alone isn't enough to achieve long-term fitness success Why VO2 max is important—but not the full picture of health or performance How metabolic testing creates a personalized fitness and longevity roadmap Why beginners, intermediates, and elite athletes all benefit from testing How improper training leads to burnout, injury, and plateaus Why consistency—not intensity—wins in the long run How metabolic data helps match training effort to real physiological goals Why metabolic testing is a baseline you can't "fail" How testing supports fat loss without sacrificing muscle or metabolic health Why starting with data prevents the cycle of stop-and-start fitness Follow KORR: Instagram: https://www.instagram.com/korrmedical/  Facebook: https://www.facebook.com/korrmedical/  LinkedIn: https://www.linkedin.com/company/korrmedical https://korr.com/  Listen to the Metabolic Mastery Podcast: Apple Podcast: https://podcasts.apple.com/us/podcast/metabolic-mastery/id1812972674  Spotify: https://open.spotify.com/show/2sgLMFv1Z8DwEz87yUpapI?si=29a177a6c6ca4ed4  YouTube: https://www.youtube.com/@korrmed/podcasts  YouTube Music: https://music.youtube.com/playlist?list=PLVCRWXBDdFo_S0OeaAsPv8xTnfajTLc75&si=d4wVUA0jqajkbukB  Amazon: https://music.amazon.com/podcasts/d76834b7-c11a-485f-8010-32b490d49e57/metabolic-mastery  
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  Ep. 32 - Test, Don't Guess: Inside Metabolic Efficiency Training with Bob Seebohar 09.12.2025 1t 18min

  Get the book: https://shopenrgperformance.com/hard-copy-books-1  https://shopenrgperformance.com/ebooks And Learn More About Bob: Website: https://www.enrgperformance.com/metabolic-efficiency-training  YouTube: https://www.youtube.com/@Enrgperformance  In this episode of Metabolic Mastery, Dr. Marc Humbert and Dr. Cameron Garber sit down with Bob Seebohar – registered dietitian, exercise physiologist, founder of the Metabolic Efficiency Training™ concept and Energy Performance, and author of Metabolic Efficiency Training (3rd Edition). Bob shares how failing his first sprint triathlon as a "land athlete" soccer player became the catalyst for a career spent in the trenches with athletes. He walks through the origins of nutrition periodization, the birth of metabolic efficiency testing, and why traditional "just eat more carbs" advice often leads to GI distress, underperformance, and confusion—especially for recreational athletes. You'll hear how metabolic carts, substrate oxidation data, and smart training can transform an athlete from a carb-dependent "sugar burner" into a fat-burning, metabolically efficient machine, all while improving health, longevity, and performance. What You'll Learn Bob's unique path from exercise physiologist to registered dietitian and how that dual background shaped Metabolic Efficiency Training. Why energy systems matter (aerobic vs anaerobic) and how misunderstanding them wrecked Bob's first triathlon—and shaped his entire career. The origin of nutrition periodization and why athletes should eat to train, not train to eat. How GI distress in endurance sports led Bob to develop metabolic efficiency testing and rethink high-carb race fueling. What metabolic efficiency testing actually measures: Fat vs carbohydrate oxidation The metabolic efficiency (crossover) point Calories burned per hour How to turn that data into precise fueling plans Why so many recreational runners and triathletes show up as "pure carb burners" on the metabolic cart—and what to do about it. The difference between elite fueling strategies and what's realistic (and safe) for everyday athletes. How optimizing blood sugar and fat oxidation improves performance and long-term health and longevity. Why Zone 2 training is so uncomfortable mentally, and how heart rate monitors should mostly be used to hold you back, not push you harder. How metabolic efficiency testing can guide calorie and carbohydrate intake per hour instead of guessing from generic "30–90g carbs per hour" charts. The role of metabolic flexibility and how to train your body to use the right fuel at the right time. The power of N=1 experiments and why self-testing (with good equipment) is one of the fastest ways to gain coaching wisdom. Why Bob advocates simple, qualitative nutrition models instead of obsessive calorie and macro counting for most people. The difference between biological hunger, habitual hunger, and emotional hunger, and how each one affects performance and body composition. How often you should feel hungry if your blood sugar and fat oxidation are dialed in. Why Bob waited 10 years to release the 3rd edition of Metabolic Efficiency Training and what's new in it (masters athletes, updated strategies, case studies). Get A Demo: https://korr.com/contact/video-demo/   Follow KORR: Instagram: https://www.instagram.com/korrmedical/  Facebook: https://www.facebook.com/korrmedical/  LinkedIn: https://www.linkedin.com/company/korrmedical https://korr.com/  Listen to the Metabolic Mastery Podcast: Apple Podcast: https://podcasts.apple.com/us/podcast/metabolic-mastery/id1812972674  Spotify: https://open.spotify.com/show/2sgLMFv1Z8DwEz87yUpapI?si=29a177a6c6ca4ed4  YouTube: https://www.youtube.com/@korrmed/podcasts  YouTube Music: https://music.youtube.com/playlist?list=PLVCRWXBDdFo_S0OeaAsPv8xTnfajTLc75&si=d4wVUA0jqajkbukB  Amazon: https://music.amazon.com/podcasts/d76834b7-c11a-485f-8010-32b490d49e57/metabolic-mastery