Tim Ferriss Cold Thermogenesis Special Episode

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Biohacking, Podcast

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Click here for the full written transcript of this podcast episode

For the past 4 days, I've been living in the Rocky Mountain National Park – at above 9000 feet altitude in the depths of the Colorado wilderness. During each of those days, I took a 15-30 minute icy cold plunge into the big mountain lake…

…and there's a very specific reason why – something called “cold thermogenesis” (also known as “CT”).

If you don't know what CT is – or why it can help you get massively tougher, burn fat faster, decrease inflammation, boost performance and build cardiovascular endurance, then today's Tim Ferriss Cold Thermogenesis Special Episode is for you. In this interview, I talk more about the topic of cold and fat loss with Tim Ferriss, and NASA materials engineer Ray Cronise.

In this episode, we discuss:

-Why weight loss experts are wrong when they say that “calories in=calories out” is the weight loss equation….

-What type of self-experiments Tim conducted to see whether changes in body temperature can result in weight loss…

-Exactly how your biology responds to cold, and what it means for your rapid fat loss…

-What to eat before cold exposure to make you lose even more fat, faster…

-Practical ways to get instant cold exposure for weight loss…   

-The future of research and experimentation in cold exposure and fat loss…

Due to the fact that I'm off to London this week to speak at the Global Triathlon Conference and do a Primality workshop with Darryl Edwards, we dug this extremely popular podcast episode out of our archives.

If you want more resources on cold thermogenesis, then you're in luck. In addition to today's podcast, I'd highly recommend you check out the following:

-The DeSoto Arm Coolers I'll be sporting during Ironman Hawaii this year

Tim's 4 Hour Body book

What Is A Body Cooling Device, and Does It Actually Work?

How You Can Use Cold Thermogenesis To Perform Like Lance Armstrong And Michael Phelps

Tips For Burning More Fat With Cold Thermogenesis (And Why Icing Really Does Work)

The BenGreenfieldFitness Premium content, which features an absolutely mind-blowing 1 hour cold thermogenesis lecture and slides by Ray Cronise

Question, comments or feedback about cold thermogenesis? Have you tried cold thermogenesis? If so, what have you found successful? Leave your thoughts below.

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26 thoughts on “Tim Ferriss Cold Thermogenesis Special Episode

  1. wipergreaser says:

    This did not answer my question about the fan. Can I just fan myself while I sleep to get results or would it be recommended to follow the Kack Cruise protocol?

    1. You'd be better off following Kruse protocol, honestly – but every little bit counts….

  2. wipergreaser says:

    I don't understand any practical ways of using cold thermogenisis. Instead of soaking my face in water and getting in a ice cold tub of 50 degrees, could i just use a fan and put ice on myself lying down to the "metabolic" and "rocovery" effect? Will a fan make it so that I will be cooler and not have to worry about getting my house to 65 degrees F? Also will I still get the cold thermogenis befifits even though I am not shivering or do I have goosbumps to get the effect?

      1. wipergreaser says:

        This did not answer my question about the fan. Can I just fan myself while I sleep to get results or would it be recommended to follow the Kack Cruise protocol?

  3. teripitman says:

    I just listened to this during a long work trip on the road and this may explain why I seem to get leaner in the winter. I live at 8500' in the mountains and train outside no matter what the weather. Running, riding, snowshoe, CX ski, anything I can do to not be inside. But I've always found it strange how my body does the opposite of what many others do. Seems most people drop some weight in the summer and put it back on in the winter whereas I seem to have the opposite occur. This thermogenesis explanation seems to make the most sense.

  4. Dragonfly_589 says:

    An interesting subject to discuss, I must admit. I've never heard about the cold having such an effect on human body as getting slimmer. But for girls who have read this article, do not be so fanatic about this news, as it can have not good concequences for your health ;)

  5. stinkyboomboom says:

    Nice podcast Ben. FYI, the "DeSoto Arm Coolers" link is missing an "h" at the front of the URL.

    1. Got it – fixed. Thanks!

  6. hemming01 says:

    Where exactly do I find the lecture by Ray? It only links to the premium site. I'm obviously a premium member already :)

    1. Easiest way is to search for "Ray Cronise" in the app. It's called – App EXCLUSIVE Audio: Ray Cronise: “The Real Truth About Thermogenesis, Cold Exposure & Weight Loss”

      1. hemming01 says:

        Thanks Ben. But isn't it possible to listen to it on the computer?

        1. Yes, if you are signed up for premium at https://bengreenfieldfitness.com/premium you can access it anywhere!

          1. hemming01 says:

            I've tried searching for it in the premium section and nothings shows up.

          2. Just search in the main content window, you'll find it!

          3. hemming01 says:

            I've tried searching the premium section and the app with different words and nothing works. I would be curious if anybody else is able to find it.

          4. hemming01 says:

            Thanks Ben! That works.

  7. HarleyEblen says:

    This is so cool. I appreciate what you guys mentioned about the appetite.

    I was curious about if you stack Tian Chi, Cold thermogenesis, and intermittent fasting in the mornings. From everything I have seen on your site and in the podcasts, it seems like this is your routine. Do you recommend that? Would you recommend adding in some of the appetite control recommendations you have like spirulina or coconut oil?


    1. Absolutely! You nailed it.

  8. Buddy says:

    You might consider doing some more work on your website.

    While the overall design and information is excellent, it takes an excessive amount of time to load. It stutters while (I think) embedded links to social media sites are loading.

    It's annoying because one can start reading an article like this one and all of a sudden the page reformats and one is thrown back to the top of the page.

    It's a shame because this detracts from the otherwise high quality feel of the site.

    I mean this constructively, but from all the sites I use this is perhaps the worst from this loading performance aspect.

    Keep up the good work and thanks for all the information!

    (P.S: I use Chrome, so I would doubt this is a browser issue)

    1. We'll contact our web guy ASAP!

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