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How to Lose Fat with Science-Based Tools

This episode I describe the science of fat loss, including how fat is mobilized and oxidized (burned) and how to increase fat burning by leveraging the nervous system. Most people don't realize it, but our neurons connect to our fat and release epinephrine/adrenaline to facilitate fat oxidation. I explain how this can be accomplished with non-exercise movements such as fidgeting to burn thousands of calories of fat a day-- a practice is rarely discussed but very well supported by the science literature. I also discuss an optimal fat loss protocol using cold to create shiver, and how specific types and timing of exercise impact fat loss. I discuss if exercising fasted indeed increases fat oxidation-- it turns out the type and duration of exercise really matters. And I discuss the use of caffeine, GLP1 from Mate or guayusa and emerging new prescription compounds for fat loss. The episode includes a lot of tools, links to cost-free resources and explanation of the science underlying each tool for fat loss. #HubermanLab #FatLoss #Science Thank you to our sponsors: InsideTracker - http://insidetracker.com/huberman ExpressVPN - http://expressvpn.com/huberman Athletic Greens - http://athleticgreens.com/huberman Cold Protocols via The Cold Plunge: https://thecoldplunge.com/pages/protocols Our Patreon page: https://www.patreon.com/andrewhuberman Supplements from Thorne: http://www.thorne.com/u/huberman Social: Instagram - https://www.instagram.com/hubermanlab Twitter - https://twitter.com/hubermanlab Facebook - https://www.facebook.com/hubermanlab/ Website - https://hubermanlab.com Timestamps: 00:00:00 Introduction 00:06:00 Fat Loss: The Key Role of Neurons 00:08:44 The First Law of Fat Loss 00:11:00 Neurons Connect To Fat! (& That Really Matters) 00:13:38 5 Pillars of Metabolism: Sleep, Essential Fatty Acids, Glutamine, Microbiome, Thyroid 00:19:20 Mindset Truly Matters: Amazing Examples of Beliefs on Fat Loss 00:23:08 Our Brain Talks To Our Fat 00:25:00 The Most Incredible & Dangerous Fat Loss Agent 00:27:28 Losing Fat Is a Two-Part Process: Mobilization and Oxidation 00:32:25 The Critical Role of Adrenaline/Epinephrine, But NOT from Adrenal Glands 00:34:45 Fidgeting & Shivering: A Powerful Science-Supported Method For Fat Loss 00:41:24 How Fidgeting Works: Promotes Epinephrine Release into Fat. “N-E-A-T” 00:44:55 Two Ways of Using Shivering To Accelerate Fat Loss 00:47:30 White, Brown & Beige Fat; & Using Cold-Induced Shiver To Burn Fat 00:50:25 How To Use Cold Properly To Stimulate Fat Loss: Succinate Release Is Key/Shiver 00:52:26 Exact Protocols: (1-5X per week); Don’t Adapt! Submerge and Exit “Sets & Reps” 00:56:15 thecoldplunge.com see “protocols” tab Cold-Shiver-Fat-Loss Tool (cost free) 00:58:03 If Fat-Loss Is Your Goal, Avoid Cold Adaptation: Remember Polar Bear Swimmers 00:58:17 Irisin: Underwhelming; Succinate Is The Real Deal 01:00:00 Brown Fat, Why Babies Can’t Shiver and Becoming a Hotter Furnace, Adding Heat 01:01:55 Ice On Back of The Neck, Cold Underpants: Not A Great Idea For Fat Loss 01:04:00 A Key Paper For the Aficionados: www.ncbi.nlm.nih.gov/pmc/articles/PMC2826518/ 01:05:00 Spot Reduction: There May Be Hope After All. Targeting Specific Fat Pads. 01:09:20 Exercising For Fat Loss: What Is Best? High Intensity, Sprinting, Moderate Intensity? 01:13:30 Exercising Fasted: Does It Truly Accelerate Fat Loss/Oxidation. 01:16:30 The 90 Minute Rule: After 90 Minutes, The Fasted Exercisers Start To Burn More Fat 01:18:15 If High-Intensity Training Is Done First, The Benefits of Fasting Arrive Before 90min. 01:22:44 Post-Exercise Metabolic Increases: How To Bias This Toward Fat Oxidation 01:26:05 A Protocol For Exercise-Induced Fat Loss; Adrenalin Is The Effector 01:28:50 Supplements/Compounds For Fat Loss Part: Caffeine Fidgeting, & Caffeine Adaptation 01:34:30 Ephedrine, Fenfluramine: Removed From Market Due to Safety Concerns 01:35:22 GLP1 (Glucagon-Like Peptide 1), Yerba Mate, Guayusa Tea, Semaglutide 01:40:30 Berberine, Metformin: Glucose/Insulin Reduction, Increase Fat Oxidation: But Caution 01:41:28 Gardner Lab Results: What You Eat May Not Matter, But Adherence Is Key Tool 01:43:00 examine.com & Enter “Yerba Mate”: Lowers Heart Rate Even Though Is a Stimulant 01:44:35 Acetly-L-Carnitine: Facilitates Fat Oxidation 01:48:00 Summary List of Tools & How Nervous System Controls Fat Loss 01:51:20 Cost Free & Other Ways To Support Our Podcast, Making Sure We See Feedback Please note that The Huberman Lab Podcast is distinct from Dr. Huberman's teaching and research roles at Stanford University School of Medicine. The information provided in this show is not medical advice, nor should it be taken or applied as a replacement for medical advice. The Huberman Lab Podcast, its employees, guests and affiliates assume no liability for the application of the information discussed. Title Card Photo Credit: Mike Blabac - https://www.blabacphoto.com

Andrew Hubermanhost
May 24, 20211h 53mWatch on YouTube ↗

CHAPTERS

  1. 0:00 – 35:00

    Introduction, Sponsors, and Episode Framing

    Huberman opens the podcast, separates it from his Stanford roles, and introduces sponsors. He then frames the episode as a science-based exploration of fat loss with a special focus on the nervous system and thermogenesis, rather than just diet and hormones.

  2. 35:00 – 51:00

    Foundational Health: Sleep, Nutrition, Gut and Thyroid for Metabolism

    Before diving into advanced tools, Huberman stresses that effective fat loss requires foundational health in sleep, essential fatty acids, gut microbiome, and thyroid function. He outlines simple, non-supplement and supplement-based approaches to get these basics in order.

  3. 51:00 – 1:03:00

    Belief Effects and the Psychology of Movement

    Huberman describes research by Alia Crum showing that beliefs about exercise can alter physiological outcomes like fat loss and cardiovascular health. He positions mindset as a modulator of behavior and metabolism that interacts with, but does not replace, basic energy balance.

  4. 1:03:00 – 1:40:00

    Nervous System Control of Fat: Mobilization, Oxidation, and Adrenaline

    Huberman explains the two-step process of fat loss—mobilization and oxidation—and how sympathetic neurons and adrenaline directly regulate both. He distinguishes between systemic hormone release and local neural innervation of fat pads, laying the groundwork for targeted tools.

  5. 1:40:00 – 2:02:00

    NEAT and Fidgeting: Non-Exercise Movement as a Major Calorie Burner

    Drawing on classic work by Rothwell and Stock and modern replications, Huberman outlines how low-level, constant movement—fidgeting—can dramatically increase daily energy expenditure. He reframes fidgeting as a potent fat-loss tool via sympathetic activation and thermogenesis.

  6. 2:02:00 – 2:35:00

    Cold, Shivering, Succinate, and Brown/Beige Fat Activation

    Huberman details how cold exposure and shivering activate brown fat, convert beige to brown, and raise metabolic rate through succinate signaling. He contrasts commonly recommended cold protocols with a shiver-focused approach that better supports fat loss.

  7. 2:35:00 – 3:06:00

    Exercise Modalities, Fasting, and Sequencing for Maximal Fat Oxidation

    Huberman categorizes exercise into sprint interval (SIT), high-intensity interval (HIIT), and moderate-intensity continuous training (MICT) and explores how intensity, duration, and feeding state influence whether glycogen or fat is used. He recommends specific patterns to shift metabolism toward fat.

  8. 3:06:00 – 3:25:00

    Spot Reduction, Novel Movement, and Neural Innervation of Fat Pads

    Huberman revisits the idea of spot reduction, traditionally viewed as a myth, in light of modern knowledge about local neural innervation of fat pads. He suggests that targeted or novel movements might one day allow more localized fat loss.

  9. 3:25:00 – 3:50:00

    Compounds: Caffeine, Ephedrine History, GLP‑1, Yerba Mate, and L‑Carnitine

    Huberman reviews compounds that modulate adrenaline, insulin, GLP‑1, and mitochondrial fat oxidation. He distinguishes dangerous historical drugs from practical, lower-risk aids like caffeine, yerba mate, and L‑carnitine, while reiterating they are secondary to behavior and foundational health.

  10. 3:50:00 – 4:13:00

    Diet, Insulin, and Choosing a Sustainable Eating Pattern

    Huberman integrates diet with the mechanistic framework of insulin, glucagon, and fat oxidation. He references Gardner’s work showing multiple dietary patterns can work when adhered to, but notes that lower or better-timed carbohydrates and lower insulin favor fat burning.

  11. 4:13:00

    Summary, Resources, and Closing Remarks

    Huberman recaps the major themes: neuronal control of fat, NEAT, shivering and cold, exercise sequencing, and select compounds. He points listeners to written protocols, encourages feedback and subscriptions, and reiterates his goal of providing science-based, zero-cost tools.

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