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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: BenGreenfieldLife.com/jubilee

In this episode, John Jubilee makes the case that almost everything you have been told about hydration is beside the point. His argument is that the water is not the problem, the cell is: that a membrane gets progressively harder to penetrate as you age, that your water and your supplements simply bounce off it, and that until you change the membrane itself, nothing else you do gets in. He arrived at that after a decade of doing everything right, a gallon of water a day and a thousand dollars a month in supplements, and still having high blood pressure and no cartilage left in either knee. 

You'll hear the question he asked every one of his doctors that none of them could answer, the $11,000 machine he bought in 1997 to answer it himself, and the Energized Health protocol he built out of it. You'll also get the practical layer that costs nothing: the three steps he tells everyone to start with, the balls-of-your-feet walking trick and the soleus study behind it, his case for MSM, and why he refuses to recommend alkaline, structured, or reverse osmosis water. Then it turns personal, into cellular trauma, the ACE study, and why he believes a flawless diet still leaves something unaddressed.

Mention Ben's name on your free breakthrough call with Energized Health for 40% off the 88-day program.

Episode Sponsors:

BIOptimizers Magnesium Breakthrough: Most magnesium supplements give you one or two forms. Magnesium Breakthrough gives you all seven, in the ratios your body actually uses, so you get better sleep, calmer nerves, and steadier energy. Go to bioptimizers.com/ben and use code BEN15 for 15% off any order.

Dr. Murray ThymoQuin®: Black seed oil has been used for thousands of years, and ThymoQuin® is the most concentrated, highest-quality form of it available. It supports your immune system, your metabolism, and healthy inflammation levels. Visit doctormurray.com/ben and use code BEN25 for 25% off.

ULTRA: A clean, functional performance drink with no artificial sweeteners, no seed oils, and no junk. Get it at bengreenfieldlife.com/ultra or takeultra.com and use code BENGREENFIELD for 15% off.

Our Place: Nontoxic, PFAS-free cookware that replaces the whole cabinet with a few pieces you'll actually use. Go to fromourplace.com/ben and use code BEN for 10% off sitewide.

Quantum Upgrade: Boost your cellular energy, wherever you are, with a field that works on you, your home, and even your car. Get a 15-day free trial at quantumupgrade.io with code BEN15.

Full show notes:<a href="https://bengreenfieldlife.com/jubilee"> BenGreenfieldLife.com/jubilee</a>
In this episode, John Jubilee makes the case that almost everything you have been told about hydration is beside the point. His argument is that the water is not the problem, the cell is: that a membrane gets progressively harder to penetrate as you age, that your water and your supplements simply bounce off it, and that until you change the membrane itself, nothing else you do gets in. He arrived at that after a decade of doing everything right, a gallon of water a day and a thousand dollars a month in supplements, and still having high blood pressure and no cartilage left in either knee.&nbsp;
You'll hear the question he asked every one of his doctors that none of them could answer, the $11,000 machine he bought in 1997 to answer it himself, and the<a href="https://www.energizedhealth.com/"> Energized Health</a> protocol he built out of it. You'll also get the practical layer that costs nothing: the three steps he tells everyone to start with, the balls-of-your-feet walking trick and the<a href="https://doi.org/10.1016/j.isci.2022.104869"> soleus study</a> behind it, his case for<a href="https://my.clevelandclinic.org/health/drugs/20454-methylsulfonylmethane-msm-oral-dosage-forms"> MSM</a>, and why he refuses to recommend alkaline, structured, or reverse osmosis water. Then it turns personal, into cellular trauma, the<a href="https://www.cdc.gov/aces/about/index.html"> ACE study</a>, and why he believes a flawless diet still leaves something unaddressed.
Mention Ben's name on your free breakthrough call with<a href="https://www.energizedhealth.com/"> Energized Health</a> for 40% off the 88-day program.
Episode Sponsors:
BIOptimizers Magnesium Breakthrough: Most magnesium supplements give you one or two forms. Magnesium Breakthrough gives you all seven, in the ratios your body actually uses, so you get better sleep, calmer nerves, and steadier energy. Go to<a href="https://bioptimizers.com/ben"> bioptimizers.com/ben</a> and use code BEN15 for 15% off any order.
Dr. Murray ThymoQuin&reg;: Black seed oil has been used for thousands of years, and ThymoQuin&reg; is the most concentrated, highest-quality form of it available. It supports your immune system, your metabolism, and healthy inflammation levels. Visit<a href="https://doctormurray.com/ben"> doctormurray.com/ben</a> and use code BEN25 for 25% off.
ULTRA: A clean, functional performance drink with no artificial sweeteners, no seed oils, and no junk. Get it at<a href="https://bengreenfieldlife.com/ultra"> bengreenfieldlife.com/ultra</a> or<a href="https://takeultra.com"> takeultra.com</a> and use code BENGREENFIELD for 15% off.
Our Place: Nontoxic, PFAS-free cookware that replaces the whole cabinet with a few pieces you'll actually use. Go to<a href="https://fromourplace.com/ben"> fromourplace.com/ben</a> and use code BEN for 10% off sitewide.
Quantum Upgrade: Boost your cellular energy, wherever you are, with a field that works on you, your home, and even your car. Get a 15-day free trial at<a href="https://quantumupgrade.io/"> quantumupgrade.io</a> with code BEN15.

This Guy Healed Knee Arthritis *Without* Surgery (& Chest-Pressed 555lbs For 14 Reps) - Cellular Hydration Secrets With John Jubilee

Full show notes: bengreenfieldlife.com/bolt

In this episode, Chandler Bolt and I talk about how we've each landed on almost identical daily systems for running a company, and the one place we still disagree. Chandler makes the case that a book is a business asset rather than an income stream, explains what it actually costs to buy your way onto the New York Times list, and then walks through the routine underneath all of it: a nap he hasn't skipped in years, a morning he refuses to let anyone schedule over, and a phone that geofences itself into work mode the moment he arrives at the office.
 
You'll also hear why he self-experiments relentlessly yet refuses to wear a tracker. We get into the two metrics worth watching if you track nothing else, why the 30-minute nap ceiling is weaker science than you've been told, why a hot tub is harder on fertility than a sauna, what overhead LED lighting does to your afternoon and the BlockBlueLight bulbs I use instead, and why a manual WALKOLUTION treadmill desk beats a motorized one. Chandler also shares the airplane movement trick that got him mistaken for a lunatic by a stranger who later became a friend. Then we close on communication: being a default no, replacing calls with voice memos, and using SocialSweep to surface the connections already sitting in your phone.

Episode Sponsors:

TruDiagnostic: TruDiagnostic is an advanced at-home test that uses epigenetic analysis to measure over a million biomarkers, giving you personalized, data-driven insight into your aging, energy, and overall health. Visit TruDiagnostic.com and use code BEN20 for 20% off.

Fatty15: Fatty15 is on a mission to optimize your C15:0 levels and help you live healthier, longer. Get an additional 15% off their 90-day subscription Starter Kit by going to fatty15.com/BEN and using code BEN at checkout.

Young Goose: To experience the transformative power of Young Goose's cutting-edge skincare products, visit younggoose.com and use code BGF10 at checkout to enjoy a 10% discount on your order.

Larine: Larine's better-for-you chewing gum uses nano-hydroxyapatite, the same mineral your tooth enamel is made of, to support stronger, healthier teeth while freshening your breath. Visit BuyLarine.com/BEN for up to 50% off your order today.

Sunlighten: Sunlighten's patented infrared sauna technology delivers the highest quality near-, mid-, and far-infrared wavelengths to reduce inflammation, boost mitochondrial function, enhance detox pathways, and optimize recovery. Save up to $1,600 at get.sunlighten.com/ben with code BEN.

Nuchido: Support healthy aging at the cellular level with Nuchido TIME+, designed to optimize your body's NAD metabolism across multiple pathways rather than relying on a single ingredient, for healthy energy, cognitive function, and recovery. Visit BenGreenfieldLife.com/Nuchido and use code BEN20 to save 20%.

Full show notes: <a href="https://Bengreenfieldlife.com/bolt">bengreenfieldlife.com/bolt</a>
In this episode, Chandler Bolt and I talk about how we've each landed on almost identical daily systems for running a company, and the one place we still disagree. Chandler makes the case that a book is a business asset rather than an income stream, explains what it actually costs to buy your way onto the New York Times list, and then walks through the routine underneath all of it: a nap he hasn't skipped in years, a morning he refuses to let anyone schedule over, and a phone that geofences itself into work mode the moment he arrives at the office. &nbsp; You'll also hear why he self-experiments relentlessly yet refuses to wear a tracker. We get into the two metrics worth watching if you track nothing else, why the 30-minute nap ceiling is weaker science than you've been told, why a hot tub is harder on fertility than a <a href="https://bengreenfieldlife.com/sunlighten">sauna</a>, what overhead LED lighting does to your afternoon and the <a href="https://bengreenfieldlife.com/blockbluelight">BlockBlueLight</a> bulbs I use instead, and why a manual <a href="https://bengreenfieldlife.com/walkolution">WALKOLUTION</a> treadmill desk beats a motorized one. Chandler also shares the airplane movement trick that got him mistaken for a lunatic by a stranger who later became a friend. Then we close on communication: being a default no, replacing calls with voice memos, and using <a href="https://socialsweep.ai/">SocialSweep</a> to surface the connections already sitting in your phone.
Episode Sponsors:
<a href="https://bengreenfieldfitness.com/trudiagnostictest">TruDiagnostic:</a> TruDiagnostic is an advanced at-home test that uses epigenetic analysis to measure over a million biomarkers, giving you personalized, data-driven insight into your aging, energy, and overall health. Visit <a href="https://bengreenfieldfitness.com/trudiagnostictest">TruDiagnostic.com</a> and use code BEN20 for 20% off.
<a href="https://fatty15.com/BEN">Fatty15:</a> Fatty15 is on a mission to optimize your C15:0 levels and help you live healthier, longer. Get an additional 15% off their 90-day subscription Starter Kit by going to <a href="https://fatty15.com/BEN">fatty15.com/BEN</a> and using code BEN at checkout.
<a href="https://bengreenfieldlife.com/younggoosepodcastads">Young Goose:</a> To experience the transformative power of Young Goose's cutting-edge skincare products, visit <a href="https://bengreenfieldlife.com/younggoosepodcastads">younggoose.com</a> and use code BGF10 at checkout to enjoy a 10% discount on your order.
<a href="https://buylarine.com/BEN">Larine:</a> Larine's better-for-you chewing gum uses nano-hydroxyapatite, the same mineral your tooth enamel is made of, to support stronger, healthier teeth while freshening your breath. Visit <a href="https://buylarine.com/BEN">BuyLarine.com/BEN</a> for up to 50% off your order today.
<a href="https://get.sunlighten.com/ben">Sunlighten:</a> Sunlighten's patented infrared sauna technology delivers the highest quality near-, mid-, and far-infrared wavelengths to reduce inflammation, boost mitochondrial function, enhance detox pathways, and optimize recovery. Save up to $1,600 at <a href="https://get.sunlighten.com/ben">get.sunlighten.com/ben</a> with code BEN.
<a href="https://bengreenfieldlife.com/Nuchido">Nuchido:</a> Support healthy aging at the cellular level with Nuchido TIME+, designed to optimize your body's NAD metabolism across multiple pathways rather than relying on a single ingredient, for healthy energy, cognitive function, and recovery. Visit <a href="https://bengreenfieldlife.com/Nuchido">BenGreenfieldLife.com/Nuchido</a> and use code BEN20 to save 20%.

How To Build An Ideal Workday With Power Naps, Email Delegation & Deep Work Tactics, Featuring Chandler Bolt

Full show notes: bengreenfieldlife.com/pharma

In this special repeat episode, Dr. Sandra Kaufmann breaks down which pharmaceuticals mimic the effects of things you already do for your health: what replaces a sauna session, what replaces a fast, what replaces a cold plunge (use code BENFORGE for $500 off select products), and what she takes with meals to blunt the damage from glucose spikes. I'm re-airing it now because of a new Nature paper finding that lithium is a naturally occurring brain nutrient, and that losing it may be one of the earliest steps toward Alzheimer's, at a dose in exactly the range Dr. Kaufmann described on this show years earlier.

You'll hear why she prefers pioglitazone over metformin for autophagy, how a Japanese gastritis drug connects to Alzheimer's, and how she worked her way up on an emergency blood pressure medication, starting at a dose that nearly knocked her off her feet and climbing to 100mg with no effect at all. The centerpiece is lithium (code BGL10 for 10% off): why the doses hidden inside popular nootropics are a fraction of what she considers useful, and everything it appears to do beyond mood, from controlling a pore in your mitochondria to building bone and growing new neurons. You'll also get her honest take on gene therapy versus pharmaceuticals, why peptides underperform in an older cell, and which molecule finally knocked astaxanthin off the top of her ranking system.

Episode Sponsors:

Xtendlife Prosta Support Advanced: A comprehensive daily prostate support formula combining saw palmetto, beta-sitosterol, vitamins, minerals, and botanicals to support prostate health, urinary function, and healthy aging. Visit Xtendlife.com/BensChoice and use code GREENFIELD for 15% off your order today.

BON CHARGE: BON CHARGE is a holistic wellness brand whose products help you sleep better, perform better, recover faster, balance hormones, and reduce inflammation. Go to boncharge.com/GREENFIELD and use coupon code GREENFIELD to save 15%.

Tecton Ketones: Tecton Ketones deliver bioidentical D-beta-hydroxybutyrate (BHB), the same ketone molecule your body produces during ketosis, for clean cognitive support and stable energy with no conversion step. Visit tectonketones.com/ben and use code BEN for 16% off your first order.

Dr. Murray Natural Products – ThymoQuin®: ThymoQuin® is a clinically researched black seed oil formulated to support healthy cortisol levels, improve resilience to everyday stress, and promote overall well-being. Visit doctormurray.com/ben and use code BEN25 for 25% off all Dr. Murray Natural Products.

Hiya: Give your kids the full-body nourishment they need to grow into healthy adults. I've secured a special deal with Hiya on their best-selling children's vitamin, 50% off your first order. Go to hiyahealth.com/BEN (it is not available on their regular website).

Full show notes:<a href="https://bengreenfieldlife.com/pharma"> bengreenfieldlife.com/pharma</a>
In this special repeat episode, Dr. Sandra Kaufmann breaks down which pharmaceuticals mimic the effects of things you already do for your health: what replaces a<a href="https://bengreenfieldlife.com/sunlighten"> sauna session</a>, what replaces a fast, what replaces a<a href="https://bengreenfieldfitness.com/morozko"> cold plunge</a> (use code BENFORGE for $500 off select products), and what she takes with meals to blunt the damage from glucose spikes. I'm re-airing it now because of a new<a href="https://www.nature.com/articles/s41586-025-09335-x"> Nature paper</a> finding that lithium is a naturally occurring brain nutrient, and that losing it may be one of the earliest steps toward Alzheimer's, at a dose in exactly the range Dr. Kaufmann described on this show years earlier.
You'll hear why she prefers pioglitazone over metformin for autophagy, how a Japanese gastritis drug connects to Alzheimer's, and how she worked her way up on an emergency blood pressure medication, starting at a dose that nearly knocked her off her feet and climbing to 100mg with no effect at all. The centerpiece is<a href="https://bengreenfieldlife.com/peptual"> lithium</a> (code BGL10 for 10% off): why the doses hidden inside popular nootropics are a fraction of what she considers useful, and everything it appears to do beyond mood, from controlling a pore in your mitochondria to building bone and growing new neurons. You'll also get her honest take on gene therapy versus pharmaceuticals, why<a href="https://bengreenfieldlife.com/peptual"> peptides</a> underperform in an older cell, and which molecule finally knocked astaxanthin off the top of her ranking system.
Episode Sponsors:
<a href="https://xtendlife.com/BensChoice">Xtendlife Prosta Support Advanced:</a> A comprehensive daily prostate support formula combining saw palmetto, beta-sitosterol, vitamins, minerals, and botanicals to support prostate health, urinary function, and healthy aging. Visit<a href="https://xtendlife.com/BensChoice"> Xtendlife.com/BensChoice</a> and use code GREENFIELD for 15% off your order today.
<a href="https://boncharge.com/pages/affiliates/greenfield?bchref=greenfield">BON CHARGE</a>: BON CHARGE is a holistic wellness brand whose products help you sleep better, perform better, recover faster, balance hormones, and reduce inflammation. Go to<a href="https://boncharge.com/pages/affiliates/greenfield?bchref=greenfield"> boncharge.com/GREENFIELD</a> and use coupon code GREENFIELD to save 15%.
<a href="https://tectonketones.com/ben">Tecton Ketones:</a> Tecton Ketones deliver bioidentical D-beta-hydroxybutyrate (BHB), the same ketone molecule your body produces during ketosis, for clean cognitive support and stable energy with no conversion step. Visit<a href="https://tectonketones.com/ben"> tectonketones.com/ben</a> and use code BEN for 16% off your first order.
<a href="https://doctormurray.com/ben">Dr. Murray Natural Products &ndash; ThymoQuin&reg;:</a> ThymoQuin&reg; is a clinically researched black seed oil formulated to support healthy cortisol levels, improve resilience to everyday stress, and promote overall well-being. Visit<a href="https://doctormurray.com/ben"> doctormurray.com/ben</a> and use code BEN25 for 25% off all Dr. Murray Natural Products.
<a href="https://hiyahealth.com/BEN">Hiya</a>: Give your kids the full-body nourishment they need to grow into healthy adults. I've secured a special deal with Hiya on their best-selling children's vitamin, 50% off your first order. Go to<a href="https://hiyahealth.com/BEN"> hiyahealth.com/BEN</a> (it is not available on their regular website).

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

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