April 3, 2025
Welcome to Ben Greenfield’s Weekly Roundup!
On this weekly put up, I share with you my most fascinating discoveries of the week, together with the most recent information on the fronts of health, vitamin, well being, wellness, biohacking, and anti-aging analysis. I additionally recap my upcoming occasions and particular bulletins so you’ll be able to sustain with alternatives to study, giveaways, reductions, and extra!
New Discoveries
Is Chilly Remedy Making You Hungrier? The Shivering Reality About Chilly Publicity, Elevated Starvation, & Fats Loss 🥶🍽️
You’ve in all probability heard all about how chilly publicity—whether or not ice baths, chilly showers, or cryotherapy–can ramp up your metabolism, enhance restoration, and assist with fats loss. However there’s one thing suprising you won’t be contemplating: chilly publicity can truly make you hungrier.
A current examine printed within the American Journal of Scientific Diet simply flipped the script on the concept chilly at all times equals fats loss. In a managed crossover trial, researchers had 47 adults spend 24 hours in a analysis facility the place they might eat as a lot as they needed. The kicker? They did this in each chilly (19°C) and thermoneutral (23.5°C) circumstances to check how the temperature affected their calorie consumption.
When the room was colder, contributors ate about 13% extra meals, clocking in an additional 411 energy on common. 🤯
Now, the fascinating half right here is that this elevated meals consumption wasn’t tied to modifications in vitality expenditure, respiratory alternate ratio (RER), and even carbohydrate oxidation. In different phrases, chilly publicity itself didn’t considerably improve calorie burn—it simply made individuals hungrier and led them to eat extra.
The researchers speculate that chilly publicity prompts your physique’s pure energy-sensing mechanisms, prompting you to devour further energy to assist keep your core temperature. After being uncovered to chilly, your physique could enter a refined type of survival mode, working tougher to remain heat, which indicators your mind to refuel. This occurs as a result of consuming will increase thermogenesis—a course of referred to as the Thermic Impact of Meals (TEF)—which generates warmth throughout digestion.
Curiously, within the examine, some contributors continued to eat extra the subsequent day if their our bodies had elevated carbohydrate oxidation in the course of the chilly section, indicating that the results of chilly publicity on urge for food may persist even after the temperature normalizes.
❄️ So, what’s the takeaway?
✔️If you’re utilizing chilly remedy as a part of a fat-loss routine, simply needless to say it’d make you hungrier than regular. That post-ice-bath burger you’re craving won’t simply be in your head—it’s your physique’s manner of compensating for the intense chill you skilled.
✔️If your objective is to lose physique fats, it’s all about steadiness. Chilly publicity has its place for enhancing your metabolism and restoration from train, however don’t let these elevated cravings catch you off guard.
✔️Stay aware of your calorie consumption post-cold remedy, and maintain the give attention to nutrient-dense, satiating meals to maintain these cravings in examine.
The underside line: chilly publicity may make you are feeling like a superhero, however it might additionally make you hungrier than a bear rising from hibernation. Know the science, and also you’ll know learn how to benefit from your chilly remedy with out sabotaging your objectives.
Involved in studying extra about learn how to reap essentially the most advantages from chilly remedy, together with for metabolic enhancement and fats loss? Try these sources:
- From Despair, Dependancy & Low Power to Turning into a Whole Breathwork Ninja: How you can Unlock the *Transformative* POWER of Breath, Chilly Remedy & Sweat Lodges with Michael Nuss and Maximilian Freiler.
- Keto vs. Carnivore, Hormonal Chaos from Excessive Protein, the *Stunning* Reality About Chilly Publicity, and Why Carbs Are CRUCIAL with Jay Feldman.
- 377: The Massive Vitamin D Mistake, How Ben Reads A E book A Day, Chilly Remedy vs. Cryotherapy vs. Chilly Thermogenesis & A lot Extra!
- Capsaicin, Chilly Thermogenesis, Keto Cooking Ideas, Getting To Know Ben Greenfield & A lot Extra!
- The two Finest Methods To Burn Fats Quick (With out Destroying Your Hormones Or Metabolism).
- The BEST Dietary supplements & Checks For Infants & Kids, Methylene Blue For The Mind, Does Chilly Water Immersion “Break” Train Outcomes & MORE! Solosode #483.
- Your Mind’s Armor: Why You Want To Care About Your Blood Mind Barrier (13 Methods To Repair A Leaky Mind).
- Stack Chilly Thermogenesis, Blood Circulation Restriction & Grounding With Excessive Depth Interval Coaching For Huge Cardiovascular & Hormonal Beneficial properties, With VASPER Inventor Peter Wasowski.
📢 This Week in Well being & Efficiency: What the Newest Analysis Says 🚀
🩸 Blood Donation Alters Genes: Donating blood can truly change your genes! New Analysis discovered that frequent blood donation was linked to genetic modifications in blood stem cells that assist the manufacturing of latest, non-cancerous cells—with out elevating most cancers threat. An enchanting take a look at how your physique adapts to common blood donation (learn extra right here).
😴 Exogenous Ketones for Higher Sleep: Taking BHB ketones earlier than mattress (1.5 to 2.9 grams) may help enhance sleep high quality, resulting in larger scores for “sleepiness on rising” and “frequent dreaming.” This may very well be price a shot in case your sleep wants a lift (try the examine).
🥤 Weight loss plan Soda & Anxiousness Threat: Do you drink Weight loss plan Coke often and really feel anxious? I do know that not too long ago I stated an occasional Weight loss plan Coke wasn’t an issue, however seems that often consuming weight loss program sodas containing aspartame (like Weight loss plan Coke) is linked to elevated nervousness and destructive impacts on sperm well being, in line with new analysis. One thing to consider earlier than cracking open that may, fellas (full particulars right here courtesy of Nick Norwitz).
💚 Hashish and Early Coronary heart Assaults: A brand new examine means that hashish customers are considerably extra prone to expertise a coronary heart assault at a youthful age in comparison with non-users. Positively price noting if you happen to’re a daily consumer (learn the report right here).
📌 Key Takeaway: This week’s analysis reveals some shocking results of widespread habits—from blood donation altering gene expression to weight loss program soda rising nervousness and hashish use elevating coronary heart assault threat—plus a possible sleep enhance from ketones.
🔗 Wish to dive deeper? Click on the hyperlinks above to discover the analysis and click on right here to observe me on X for all the most recent well being and efficiency information scorching of the press! 🚀
Product Of The Week
::: Save 15% on Fatty15, a Little-Identified Hack for Resilient Getting older ::
Getting older can really feel like your physique’s beginning to flip towards you. You’re placing within the work: coaching arduous, consuming clear, prioritizing sleep. However regardless of how dialed-in your routine is, your cells simply don’t appear to bounce again like they used to. It’s irritating, proper?
There is a shocking new participant within the longevity recreation that would provide help to keep robust and resilient as you age—and it’s referred to as C15:0. This little-known fatty acid may simply change into your secret weapon for staying energized, recovering sooner, and retaining your physique performing at its finest.
A current examine printed in Vitamins revealed that C15:0 packs a critical punch in terms of mobile well being. Not solely does it assist fortify your cells towards age-related breakdown, but it surely even outperformed rapamycin—one of the well-researched longevity compounds—in terms of enhancing mobile perform. In different phrases, if you happen to’re seeking to age like a professional, fatty15 may simply be the sting you’ve been on the lookout for.
This isn’t just a few fly-by-night discovery. A decade of Navy-funded analysis has led to Fatty15, a pure, bioavailable, science-backed, patented, and award-winning C15:0 complement designed to sluggish getting old and defend your long-term well being.
And once I say science-backed, I’m not kidding. Fatty15 has racked up:
- 40+ patents
- 100+ peer-reviewed research
- 20+ awards
These things is clinically confirmed to assist:
✔️Liver well being
✔️Red blood cell well being
✔️Cholesterol well being
✔️Gut microbiome well being
When you’re critical about staying resilient, vibrant, and robust because the years go by, Fatty15 is the true deal. Need in?
Get 15% off your first order of Fatty15 with code BEN at checkout right here.
🥁 You Can Now PRE-ORDER Your Totally Up to date Copy of Boundless to *Optimize* Your Physique, Thoughts, and Spirit! 📚💪
During the last 12 months, I have been working tirelessly on one thing that I’m thrilled to lastly share: the brand-new, up to date model of my best-seller, Boundless.
Like a cookbook for the human blueprint, the revised and up to date version of Boundless provides you a zero-guesswork information to becoming an entire knowledgeable in what makes your mind tick, your physique work, your spirit pleased, and your life fulfilled.
You possibly can flip to *any* chapter and uncover essentially the most up-to-date, research-proven, trench-tested methods to construct muscle, burn fats, steadiness hormones, stay longer, sleep higher, have mind-blowing intercourse, and far, far more!
Just a few of the important thing matters that the most recent model of Boundless explores are:
- Methods to optimize mitochondrial density and biogenesis for peak vitality and metabolic well being.
- New strategies to stimulate the vagus nerve for stress discount, sleep high quality, and better coronary heart charge variability utilizing gentle, sound, and electrical interventions.
- Up to date methods for restoring circadian steadiness, combating jet lag, and maximizing sleep, naps, and meditation.
- Insights on the results of electromagnetic frequencies on the mind and physique, with tips about modifying gadgets for higher shielding.
- The newest on addressing persistent infections, detoxifying from mould, and enhancing intestine perform with cutting-edge testing and coverings.
- New dietary supplements, biohacks, and protocols based mostly on current longevity science, together with age-reversal insights.
- Contemporary routines and harm restoration instruments, plus minimalist strikes to burn fats all through the day with out health club reliance.
When you’re able to transcend the fast fixes and reclaim management over your vitality, that is your probability. Full of insights on all the pieces from breathwork to chilly remedy and the most recent anti-aging methods, Boundless will provide help to construct a balanced, sustainable method to lifelong well being. I can’t wait so that you can expertise all the pieces this information has to supply!
When you’re able to uncover a treasure trove of the most recent science-backed methods for enhancing each side of your thoughts, physique, and spirit, you’ll be able to click on this hyperlink to pre-order your new up to date copy of Boundless.
Podcasts I Recorded This Week:
Hoolest, Simply Thrive (code BEN), MUDWTR, LVLUP Well being (code BEN15), and Fatty15 (code BEN).
NOVOS (code BEN10), Quantum Improve (code BEN15), Feno (code BEN), Organifi, Historical Crunch, and Manukora (code BEN).
The Newest Content material I Was Featured On This Week:
Males’s Well being Australia: Purple Mild Remedy Legit?
Upcoming Occasions:
Well being Optimisation Summit — Austin. TX: April 12–13, 2025
The Well being Optimisation Summit, Europe’s prime wellness convention, is making its U.S. debut in Austin, Texas—and I will probably be there! Be a part of me for a robust discuss and Q&A, plus expertise insights from 35 world-class audio system masking all the pieces from vitamin and health to longevity and psychological well being. Discover over 100 exhibitors, take a look at the most recent biohacking tech, and join with 2,000 like-minded attendees. Seize your tickets right here.
The Boundless Household Retreat with Ben Greenfield — Crans-Montana, Switzerland: Could 28 – June 1, 2025
Be a part of me within the Swiss mountains for a five-day wellness retreat designed to deepen connections, optimize well being, and rejuvenate the thoughts and physique. You may expertise every day motion, breathwork, chilly plunges, climbing, and hands-on workshops whereas studying cutting-edge methods for longevity and stress resilience. Spots are restricted—reserve your house right here.
The Ark Retreat — Spokane, WA.
Be a part of me at The Ark Retreat, an unique, cutting-edge wellness expertise at my totally biohacked house in Spokane. You’ll get hands-on entry to the most recent biohacking tech, natural farm-to-table meals, customized well being insights, and the possibility to attach with a like-minded group—all in a perfected surroundings designed to optimize air, gentle, water, and vitality. Do not miss this chance to rework your well being and construct lasting connections. Click on right here to snag certainly one of 300 spots now.
Sustain on my LIVE appearances by following bengreenfieldlife.com/calendar!
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