The Matt Walker Podcast

By: Dr. Matt Walker
  • Summary

  • The Matt Walker Podcast is all about sleep, the brain, and the body. Matt is a Professor of Neuroscience at the University of California, Berkeley. He is the author of the book, Why We Sleep and has given a few TED talks. Matt is an awkward British nerd who adores science and the communication of science to the public.

    © 2025 The Matt Walker Podcast
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Episodes
  • Clara and the Twilight Garden - A Sleep Story Read by Matt Walker
    Mar 24 2025

    Find tranquility in a secret setting as Matt guides you through tonight's sleep story set in "The Twilight Garden." Meet Clara, the lamp keeper, who lovingly tends to the hundreds of lanterns that illuminate this hidden haven. On this particular evening, a grieving visitor arrives, seeking solace and a way to remember a lost loved one. As Clara shares the garden's quiet magic and the healing power of light, you'll be enveloped in the garden's peaceful atmosphere, filled with the scent of lavender and the soft glow of lanterns.

    Let your imagination stroll along the meandering paths as the warm light creates a sense of safety and calm. Focus on the soft rustling of leaves and the gentle cadence of Matt's voice, allowing the narrative to quiet your mind and soothe your body. Allow The Twilight Garden to lead you into a peaceful night's sleep, filled with the hope of rediscovering inner light and the comfort of shared stories.

    Special thanks to our sponsor, Shopify, for supporting tonight's Sleep Story! Matt will be the first to tell you that launching his sleep-related merchandise sales was incredibly smooth, thanks to our new sponsor Shopify and their integrated sales and inventory system. And now, just for you, Shopify is generously offering an exclusive trial at shopify.com/mattwalker. Whether it's online or in-person sales, Shopify simplifies it all. So, be sure to stop in at shopify.com/mattwalker to start your exclusive journey now!


    Matt: Instagram @drmattwalker, X @sleepdiplomat,

    YouTube https://www.youtube.com/@sleepdiplomatmattwalker9299

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    22 mins
  • #94 - Dream Sleep for the Body
    Mar 17 2025

    In today’s episode, Matt challenges the notion that REM sleep is solely for the brain, revealing its broad impact on physical health. He delves into REM's role in regulating testosterone and growth hormone, crucial for muscle function. Our host also highlights how REM aids muscle recovery via paralysis, boosting blood flow and supporting protein synthesis.

    Beyond muscles, Matt explores REM's effects on temperature regulation and heart health by boosting heart rate variability and promoting stress resilience. He also uncovers REM's surprising links to reproductive and immune health, from genital blood flow to enhanced immune cell production. Matt emphasizes that prioritizing REM sleep is vital for whole-body well-being, and that, by embracing the full spectrum of REM's benefits, we can all unlock a potent pathway to not just a rested mind, but a thriving, resilient body.

    Please note that Matt is not a medical doctor, and none of the content in this podcast should be considered medical advice in any way, shape, or form, nor prescriptive in any way.

    One of our sponsors this week is the biochemical electrolyte drink company LMNT, and they are very kindly offering eight free sample packs when you purchase any one of their orders at drinklmnt.com/mattwalker. LMNT is an electrolyte sports drink that I can get behind - it's created from the basis of science, and it has no sugar, no coloring, and no artificial ingredients – all qualities that are so important to maintaining your blood biochemical balance. If you want to give LMNT a try, just head on over to drinklmnt.com/mattwalker and get your eight free samples with your first purchase.


    Matt’s good friend Dr. Peter Attia has helped develop David, a revolutionary new protein bar, and a sponsor of today’s episode! 28g of protein, 0g sugar, only 150 calories – the best ratio EVER! Amazing taste, six flavors, incredibly satiating, and a great source of the protein that helps build muscle, manage metabolic health, and keep you full. Visit davidprotein.com/mattwalker now for an amazing deal: Buy 4 cartons, and get a 5th FREE! . Hurry! Your new favorite protein bar awaits!


    Tired of untrustworthy protein shakes? Show sponsor Puori prioritizes quality: hormone-free, GMO-free, and pesticide-free. Every batch is third-party tested for 200+ contaminants - you can even scan the QR code for lab results! Matt recommends the addictive dark chocolate flavor with 21g of protein. Ready to experience the Puori difference? Matt’s listeners get 20% off, so visit puori.com/mattwalker today!

    As always, if you have thoughts or feedback you’d like to share, please reach out to Matt on Instagram.

    Matt: Instagram @drmattwalker or on X @sleepdiplomat

    YouTube https://www.youtube.com/@sleepdiplomatmattwalker9299

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    29 mins
  • Ask Me Anything Part 16 - Dream Time, Circadian Changes, & Night Sweats
    Mar 10 2025

    Matt and Dr. Eti Ben Simon team up to answer more audience questions today, and begin by delving into the subjective experience of time during dreams, exploring how our perception stretches and compresses during REM sleep and whether we can hack our dreams. They also explain the cognitive, emotional, hormonal, and immunological consequences of pulling an all-nighter, highlighting the dramatic impact on memory consolidation, stress hormones, appetite regulation, and immune function. The cardiovascular and metabolic repercussions are also addressed underscoring the serious health risks associated with chronic sleep deprivation.

    The discussion shifts to the societal bias favoring morning types, challenging the notion that evening types are simply lazy. Our hosts examine chronotypes, the “sentinel hypothesis”, and the importance of aligning sleep schedules with individual preferences for optimal health. Matt and Eti then draw the episode to a close by addressing the common phenomenon of night sweats, differentiating between pathological causes and the normal thermoregulatory disconnect during REM sleep.

    Please note that Matt is not a medical doctor, and none of the content in this podcast should be considered medical advice in any way, shape, or form, nor prescriptive in any way.


    Tired of untrustworthy protein shakes? Show sponsor Puori prioritizes quality: hormone-free, GMO-free, and pesticide-free. Every batch is third-party tested for 200+ contaminants - you can even scan the QR code for lab results! Matt recommends the addictive dark chocolate flavor with 21g of protein. Ready to experience the Puori difference? Matt’s listeners get 20% off, so visit puori.com/mattwalker today!

    Another great sponsor of the show is AG1, a comprehensive nutritional drink trusted by thousands worldwide, including Matt! For nearly four years and counting, he has relied on AG1 to fuel his post-workout routine with its powerhouse blend of over 75 essential minerals, vitamins, probiotics, and prebiotics, meticulously crafted to support your daily nutritional needs. AG1 is registered and approved by the Therapeutic Goods Administration, boasting GMP badges for quality assurance. As a special offer for our listeners, when you try AG1, you'll receive a complimentary one-year supply of both Vitamin D and K2, and with your first subscription, you'll also receive five free AG1 travel packs! Visit AG1 to explore AG1's range of offerings and claim your exclusive offer.


    As a health fanatic, Matt’s kryptonite has always been bread. Then he discovered Hero Bread: zero net carbs, zero sugar, and packed with fiber! For years, he’s enjoyed their fluffy loaves (his favorite topped with tomatoes, balsamic, and parmesan). Now, you can try it too! Hero Bread offers a delicious variety of healthy bread options, from tortillas and wraps to bagels and dinner rolls. Ready to enjoy bread again? Get 10% off your order at hero.co using code MATTWALKER.

    As always, if you have thoughts or feedback you’d like to share, please reach out to Matt or Eti:

    Matt: Instagram @drmattwalker, X @sleepdiplomat,

    YouTube https://www.youtube.com/@sleepdiplomatmattwalker9299

    Eti: X @etoosh, Instagram https://www.instagram.com/eti_bensimon/, or email at etoosh@gmail.com



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    52 mins

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Fascinating and well-delivered information!

I am very much enjoying learning more about sleep, and the many ways it can affect us! Thank you for this informative and enjoyable podcast!

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Refreshingly positive and science-based

As I write this review, there are 26 podcasts in the series and they have all been enjoyable, 10-20 minutes in length, science-based, free from profanity, and delivered in a calm, easily understandable manner. Laypersons and scientists alike will enjoy the useful information, and Dr. Walker's passion for communicating it is contagious. He is a gifted educator. Each podcast leaves one feeling empowered with the knowledge of how to support one's own sleep, eager for more episodes, and in a happier mood from his sheer exuberance about the topic. 5 stars!

Updated review: 45 podcasts in and still well worth tuning in. I look forward to each episode (released every 2 weeks), and I hope Dr. Walker continues to share his knowledge and enthusiasm about sleep for a long time coming :) 5 stars!

Congratulations to Dr. Walker on reaching the 50-podcasts milestone--particularly as they remain relevant, educational, and entertaining. I particularly enjoy the new format, called "Hot Off the Press", in which current research findings on a topic are discussed in a manner we all can understand and enjoy. I can honestly say that I look forward to each new episode, even after 2 years of listening :)

Updated review: 67 podcasts along and I still look forward to each new one to learn more about sleep. I enjoy the single-topic ones and the guest/Ask-Me-Anything ones. It remains positive and science-based format, which is a refreshing change from much of what is out on the Internet and airwaves nowadays. I look forward to learning more in the coming episodes, and I appreciate all the hard work going into them.

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