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Jack Kruse is a brilliant but highly controversial neurosurgeon who originally joined us for the podcast episode "How You Can Use Cold Thermogenesis To Perform Like Lance Armstrong And Michael Phelps". Today he's back. And he's going to tell you how to live like a Polar Bear and eat like a Great White Shark. Don't [...]

The post Jack Kruse Tells You How To Live Like A Polar Bear And Eat Like A Great White Shark appeared first on Ben Greenfield Fitness.

For <a href="http://www.bengreenfieldfitness.com/2013/06/jackkruse/">Full Show Notes</a>, <a href="http://www.bengreenfieldfitness.com/2010/01/newsletter2/">Ben's Free Newsletter</a> and episode links, push the little "e" button on the lower right side.   Jack Kruse is a brilliant but highly controversial neurosurgeon who originally joined us for the podcast episode "How You Can Use Cold Thermogenesis To Perform Like Lance Armstrong And Michael Phelps". Today he's back. And he's going to tell you how to live like a Polar Bear and eat like a Great White Shark. Don't [...] The post <a href="http://www.bengreenfieldfitness.com/2013/06/jackkruse/">Jack Kruse Tells You How To Live Like A Polar Bear And Eat Like A Great White Shark</a> appeared first on <a href="http://www.bengreenfieldfitness.com">Ben Greenfield Fitness</a>.

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Boundless Life

For ,  and episode links, push the little "e" button on the lower right side.   Jack Kruse is a brilliant but highly controversial neurosurgeon who originally joined us for the podcast episode "How You Can Use Cold Thermogenesis To Perform Like...

Jack Kruse Tells You How To Live Like A Polar Bear And Eat Like A Great White Shark

Full Show Notes: https://bengreenfieldlife.com/newAIP 

In this episode with Mickey Trescott, you'll hear how she went from bedridden at 26 with Hashimoto's and celiac to overseeing four pilot trials, helping grow a community of 1,000 trained AIP practitioners, and writing the first official update to the Autoimmune Protocol, including a new modified version for people who found the original too restrictive.

We cover what a full day of eating on AIP actually looks like, why food sensitivity panels cannot replace elimination and reintroduction, how to use WHOOP to track food reactions, the genetics of autoimmunity, the iodine problem in Hashimoto's, and why three out of four people who follow AIP properly get meaningful clinical improvement.

Mickey is a nutrition professional and one of the founding leaders of the Autoimmune Protocol movement. She wrote the original AIP cookbook, which became the definitive guide to the protocol. Her new book, The New Autoimmune Protocol, releasing May 26, 2026, includes detailed meal plans and 70+ recipes across both the core and modified protocols. Pre-order your copy here.

Episode Sponsors:

Formula IQ: Recuperate IQ is a comprehensive copper supplement designed to support mitochondrial energy, iron balance, and metabolic health, pairing bioavailable copper with essential cofactors your body needs for proper utilization. Try it at formulaiq.com and use code BEN for 10% off.

ULTRA: A clean, nicotine-free, caffeine-free pouch delivering smooth, sustained energy and focus using clinically backed nootropics and adaptogens, without jitters, crashes, or sleep disruption. Visit takeultra.com and use code BENGREENFIELD for 15% off.

ZBiotics Pre-Alcohol Probiotic: The world's first genetically engineered probiotic that helps break down the toxic byproduct of alcohol. Order with a 100% money-back guarantee and 15% off at zbiotics.com/BEN15.

Active Skin Repair: Uses hypochlorous acid, a molecule your body naturally produces, to support skin repair and defense without harsh chemicals. Go to ActiveSkinRepair.com and use code BEN for 20% off, or find it on Amazon and at your local CVS.

Manukora: Honey with superpowers. Head to manukora.com/ben or use code BEN to get $25 off your Starter Kit.

BlockBlueLight: Flicker-free, ultra-low EMF, circadian-friendly BioLights with three modes to support natural rhythms and sleep quality. Get 10% off at blockbluelight.com/Ben (discount auto-applied at checkout).

Full Show Notes: <a href="https://bengreenfieldlife.com/newAIP">https://bengreenfieldlife.com/newAIP</a>&nbsp;
In this episode with <a href="https://www.instagram.com/mickeytrescott">Mickey Trescott</a>, you'll hear how she went from bedridden at 26 with Hashimoto's and celiac to overseeing four pilot trials, helping grow a community of 1,000 trained AIP practitioners, and writing the first official update to the <a href="https://amzn.to/4ukKH6Z">Autoimmune Protocol</a>, including a new modified version for people who found the original too restrictive.
We cover what a full day of eating on AIP actually looks like, why food sensitivity panels cannot replace elimination and reintroduction, how to use <a href="https://bengreenfieldlife.com/whoop">WHOOP</a> to track food reactions, the genetics of autoimmunity, the iodine problem in Hashimoto's, and why three out of four people who follow AIP properly get meaningful clinical improvement.
Mickey is a nutrition professional and one of the founding leaders of the Autoimmune Protocol movement. She wrote the original AIP cookbook, which became the definitive guide to the protocol. Her new book, <a href="https://amzn.to/4ukKH6Z">The New Autoimmune Protocol</a>, releasing May 26, 2026, includes detailed meal plans and 70+ recipes across both the core and modified protocols. Pre-order your copy here.
Episode Sponsors:
<a href="https://bengreenfieldlife.com/formulaiq">Formula IQ</a>: Recuperate IQ is a comprehensive copper supplement designed to support mitochondrial energy, iron balance, and metabolic health, pairing bioavailable copper with essential cofactors your body needs for proper utilization. Try it at <a href="http://formulaiq.com">formulaiq.com</a> and use code BEN for 10% off.
<a href="https://bengreenfieldlife.com/ultra">ULTRA</a>: A clean, nicotine-free, caffeine-free pouch delivering smooth, sustained energy and focus using clinically backed nootropics and adaptogens, without jitters, crashes, or sleep disruption. Visit <a href="http://takeultra.com">takeultra.com</a> and use code BENGREENFIELD for 15% off.
<a href="http://zbiotics.com/BEN">ZBiotics Pre-Alcohol Probiotic</a>: The world's first genetically engineered probiotic that helps break down the toxic byproduct of alcohol. Order with a 100% money-back guarantee and 15% off at <a href="http://zbiotics.com/BEN15">zbiotics.com/BEN15</a>.
<a href="https://activeskinrepair.com">Active Skin Repair</a>: Uses hypochlorous acid, a molecule your body naturally produces, to support skin repair and defense without harsh chemicals. Go to <a href="https://activeskinrepair.com">ActiveSkinRepair.com</a> and use code BEN for 20% off, or find it on Amazon and at your local CVS.
<a href="http://manukora.com/ben">Manukora</a>: Honey with superpowers. Head to <a href="http://manukora.com/ben">manukora.com/ben</a> or use code BEN to get $25 off your Starter Kit.
<a href="http://blockbluelight.com/Ben">BlockBlueLight</a>: Flicker-free, ultra-low EMF, circadian-friendly BioLights with three modes to support natural rhythms and sleep quality. Get 10% off at <a href="http://blockbluelight.com/Ben">blockbluelight.com/Ben</a> (discount auto-applied at checkout).

Gas, Bloating, Fatigue & Other Post-Meal Issues? Discover The NEW Autoimmune Protocol With Mickey Trescott

Full show notes: www.bengreenfieldlife.com/skinrepair 

In this episode with Justin Gardner, you'll explore the science behind hypochlorous acid (HOCl), a compound your white blood cells already make to kill pathogens, repair tissue, and control inflammation. You'll discover why it can be 100x more effective than bleach without driving bacterial resistance, how it outperforms hydrogen peroxide and Neosporin without stinging or damaging healthy tissue, and why formulation and pH determine whether a product actually works. From cuts and acne to post-procedure recovery and eczema, this is one of the most versatile and overlooked tools in skin health.

Justin Gardner is a medical technology entrepreneur with over 20 years of experience bringing regenerative and clinical innovations to market. He licensed and scaled hypochlorous acid-based solutions into the consumer space through Active Skin Repair, a line of medical-grade HOCl formulations cleared by the FDA for use on open skin and verified to EWG's highest standards.

👉 Use code BEN at activeskinrepair.com for 30% off all products through 5/28/26.

Episode Sponsors:

Troscriptions: A revolutionary buccal troche delivery system that bypasses digestion to deliver pharmaceutical-grade compounds directly through your cheek mucosa for faster onset and higher bioavailability. Visit troscriptions.com/BEN or use code BEN for 10% off your first order.

Organifi Shilajit Gummies: Pure Himalayan Shilajit in a convenient gummy. Get 20% off at organifi.com/Ben.

Pendulum: Metabolic Daily is a multi-strain probiotic that improves metabolism, reduces sugar cravings, and sustains energy levels. Get 20% off your first month with code BEN at pendulumlife.com/Greenfield.

BlockBlueLight: Flicker-free, ultra-low EMF, circadian-friendly BioLights with three modes to support natural rhythms and sleep quality. Get 10% off at blockbluelight.com/Ben (discount auto-applied at checkout).

Manukora: Honey with superpowers. Head to manukora.com/ben or use code BEN to get $25 off your Starter Kit.

Full show notes: <a href="https://www.bengreenfieldlife.com/skinrepair">www.bengreenfieldlife.com/skinrepair</a>&nbsp;
In this episode with <a href="https://www.linkedin.com/in/justinsgardner/">Justin Gardner</a>, you'll explore the science behind hypochlorous acid (HOCl), a compound your white blood cells already make to kill pathogens, repair tissue, and control inflammation. You'll discover why it can be 100x more effective than bleach without driving bacterial resistance, how it outperforms hydrogen peroxide and Neosporin without stinging or damaging healthy tissue, and why formulation and pH determine whether a product actually works. From cuts and acne to post-procedure recovery and eczema, this is one of the most versatile and overlooked tools in skin health.
Justin Gardner is a medical technology entrepreneur with over 20 years of experience bringing regenerative and clinical innovations to market. He licensed and scaled hypochlorous acid-based solutions into the consumer space through <a href="https://bengreenfieldlife.com/activeskinrepair">Active Skin Repair</a>, a line of medical-grade HOCl formulations cleared by the FDA for use on open skin and verified to EWG's highest standards.
👉 Use code BEN at activeskinrepair.com for 30% off all products through 5/28/26.
Episode Sponsors:
<a href="https://troscriptions.com/BEN">Troscriptions: </a>A revolutionary buccal troche delivery system that bypasses digestion to deliver pharmaceutical-grade compounds directly through your cheek mucosa for faster onset and higher bioavailability. Visit&nbsp;<a href="https://troscriptions.com/BEN">troscriptions.com/BEN</a>&nbsp;or use code BEN for 10% off your first order.
<a href="https://organifi.com/Ben">Organifi Shilajit Gummies</a>: Pure Himalayan Shilajit in a convenient gummy. Get 20% off at <a href="https://organifi.com/Ben">organifi.com/Ben</a>.
<a href="https://pendulumlife.com/Greenfield">Pendulum:</a> Metabolic Daily is a multi-strain probiotic that improves metabolism, reduces sugar cravings, and sustains energy levels. Get 20% off your first month with code BEN at <a href="https://pendulumlife.com/Greenfield">pendulumlife.com/Greenfield</a>.
<a href="https://pendulumlife.com/Greenfield">BlockBlueLight</a>: Flicker-free, ultra-low EMF, circadian-friendly BioLights with three modes to support natural rhythms and sleep quality. Get 10% off at <a href="https://blockbluelight.com/Ben">blockbluelight.com/Ben</a> (discount auto-applied at checkout).
<a href="https://manukora.com/ben">Manukora</a>: Honey with superpowers. Head to <a href="https://manukora.com/ben">manukora.com/ben</a> or use code BEN to get $25 off your Starter Kit.

Is THIS The Most Effective, Non-Toxic Biocide & Skin Repair Treatment Known To Modern Medicine? Active Skin Repair With Justin Gardner.

Full Show Notes:https://bengreenfieldlife.com/rootsofhealth 

In this special "Best Of" episode, you'll explore some of my most impactful conversations on what actually builds long-term roots of health. If you're dealing with low energy, hormonal issues, chronic inflammation, or just a nagging sense that something's off despite doing all the right things, this episode gives you a clear roadmap.

You'll hear from Daniel Baird on why the synthetic fabric in your underwear may be quietly disrupting your hormones and why microplastics are becoming one of the biggest threats to male reproductive health, while Katy Bowman makes the case that your chair and mattress are doing more damage than you think. Justin Roethlingshoefer shares how a near-death diagnosis at 32 completely rewired his approach to health data and recovery. Dr. Cate Shanahan breaks down how the oils in your kitchen are being incorporated into your cell membranes. Julie Gibson Clark shows how she rebuilt her health from scratch in her 40s. And James Pieratt closes with a deep dive into what Spartan warriors actually trained like, and why it still holds up as one of the most complete blueprints for human performance ever devised.

Whether you listen start to finish or jump to the section that speaks to you most, you'll find something in here that changes the way you think about your health.

Episode Sponsors:

Anthros: Anthros starts with a Precision Posture System at the pelvis so your spine naturally aligns, plus a built-in Clinical Posture Consult. Go to anthros.com and use code BEN for an exclusive $200 discount, risk-free for 60 days.

Kettle & Fire: One ingredient Beef Tallow, 100% grass-fed and finished, for better browning, crispier texture, and a higher smoke point. Head to kettleandfire.com/BEN25 and use code BEN25 for 25% off site-wide.

Quantum Upgrade: Recent research revealed Quantum Upgrade increased ATP production by 20–25% in human cells. Unlock a 15-day free trial with code BEN15 at quantumupgrade.io.

Manukora: Honey with superpowers. Head to manukora.com/ben or use code BEN to get $25 off your Starter Kit.

Full Show Notes: <a href="https://bengreenfieldlife.com/rootsofhealth">https://bengreenfieldlife.com/rootsofhealth</a>&nbsp;
In this special "Best Of" episode, you'll explore some of my most impactful conversations on what actually builds long-term roots of health. If you're dealing with low energy, hormonal issues, chronic inflammation, or just a nagging sense that something's off despite doing all the right things, this episode gives you a clear roadmap.
You'll hear from<a href="https://www.instagram.com/imdanbaird/"> Daniel Baird</a> on why the synthetic fabric in your underwear may be quietly disrupting your hormones and why microplastics are becoming one of the biggest threats to male reproductive health, while <a href="https://www.instagram.com/nutritiousmovement/?hl=en">Katy Bowman</a> makes the case that your chair and mattress are doing more damage than you think. <a href="https://justinroethlingshoefer.com/">Justin Roethlingshoefer </a>shares how a near-death diagnosis at 32 completely rewired his approach to health data and recovery. <a href="https://drcate.com/">Dr. Cate Shanahan</a> breaks down how the oils in your kitchen are being incorporated into your cell membranes. <a href="https://www.juliegibsonclark.com/">Julie Gibson Clark</a> shows how she rebuilt her health from scratch in her 40s. And <a href="https://www.instagram.com/wildhuntconditioning/">James Pieratt</a> closes with a deep dive into what Spartan warriors actually trained like, and why it still holds up as one of the most complete blueprints for human performance ever devised.
Whether you listen start to finish or jump to the section that speaks to you most, you'll find something in here that changes the way you think about your health.
Episode Sponsors:
<a href="https://bengreenfieldlife.com/anthros">Anthros</a>: Anthros starts with a Precision Posture System at the pelvis so your spine naturally aligns, plus a built-in Clinical Posture Consult. Go to <a href="https://bengreenfieldlife.com/anthros">anthros.com</a> and use code BEN for an exclusive $200 discount, risk-free for 60 days.
<a href="http://kettleandfire.com/BEN25">Kettle &amp; Fire</a>: One ingredient Beef Tallow, 100% grass-fed and finished, for better browning, crispier texture, and a higher smoke point. Head to <a href="http://kettleandfire.com/BEN25">kettleandfire.com/BEN25</a> and use code BEN25 for 25% off site-wide.
<a href="http://quantumupgrade.io/">Quantum Upgrade</a>: Recent research revealed Quantum Upgrade increased ATP production by 20&ndash;25% in human cells. Unlock a 15-day free trial with code BEN15 at <a href="http://quantumupgrade.io">quantumupgrade.io</a>.
<a href="http://manukora.com/ben">Manukora</a>: Honey with superpowers. Head to <a href="http://manukora.com/ben">manukora.com/ben</a> or use code BEN to get $25 off your Starter Kit.

Jack Kruse Tells You How To Live Like A Polar Bear And Eat Like A Great White Shark

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