Metabolic Mastery

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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 &mdas...

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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 l...

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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 ...

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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...

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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 o...

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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 ...

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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...

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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...

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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 ...

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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 summite...

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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 aroun...

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 p...

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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 e...

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Have you ever wondered how a device that just measures your breath can tell you how many calories you're burning, what fuel your body is using, and how well your heart, lungs, and muscles are working together? In this episode of Metabolic Mastery, Dr. Marc Humbert and Dr. Cameron Garber break down the fascinating science behind indirect calorimetry and the CardioCoach — in pla...

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Are you optimizing your workouts based on short-term signals that may not actually lead to long-term results? In this episode of Metabolic Mastery, Dr. Marc Humbert and Dr. Cameron Garber break down one of the most misunderstood concepts in fitness — the difference between what happens in your body during a single workout versus what actually drives lasting adaptation over ti...

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Think your metabolism fell off a cliff the moment you hit your 40s? Think again. In this episode of Metabolic Mastery, Dr. Marc Humbert and Dr. Cameron Garber break down the real science behind aging and metabolism — and why most of what you've been told is a myth.

You Will Learn:

• Why aging isn't the real culprit behind weight gain, injury, and metabolic slowdown &mdash...

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In this episode of Metabolic Mastery, Dr. Marc Humbert and Dr. Cameron Garber pull back the curtain on the practical tips, shortcuts, and workflows that separate good metabolic testing data from great data. Whether you're just getting started with VO2 max and RMR testing or you've been doing it for years, this episode is packed with actionable knowledge that will immediately improv...

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Is cardio bad for your knees? Does running destroy your joints? Will endurance training make you weak? In this episode of Metabolic Mastery, Dr. Marc Humbert and Dr. Cameron Garber tackle the most common endurance training myths circulating on social media and break down what the science actually says.

They explore why cardio gets such a bad rap, how incorrect dosing — not t...

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In this episode of Metabolic Mastery, hosts Dr. Marc Humbert and Cameron Garber sit down with Daniel Crumback — KORR's Director of International Sales, certified exercise physiologist, chartered physiotherapist, and certified strength and conditioning coach — for a deep dive into one of the most overlooked data sets in metabolic testing: respiratory values. While most pr...