#127 - AMA #3 with sleep expert, Matthew Walker, Ph.D.: Fasting, gut health, blue light, caffeine, REM sleep, and more

The Peter Attia Drive

Peter Attia, MD

Health & Fitness, Medicine, Fitness

4.7 • 7.3K Ratings

🗓️ 7 September 2020

⏱️ 16 minutes

🔗️ Recording | iTunes | RSS

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Summary

In this special episode, Matthew Walker returns for his third AMA episode to provide his expert insight into numerous sleep-related questions directly from listeners. He explains how he adjusted his hypotheses on topics like blue light and caffeine, and why he is more bullish on the importance of REM sleep. Matt also answers questions about sleep wearables, how fasting affects sleep, how sleep deprivation impacts gut health, and magnesium as a sleep aid. Finally, Matt reveals what he believes is the next evolution in sleep science and technology. If you’re a subscriber, you can now listen to this full episode on your private RSS feed or on our website on the show notes page.

We discuss:

Matt’s framework for changing his mind when faced with new information [1:30];
Blue light—How Matt shifted his thinking [5:45];
Caffeine—How Matt has adjusted his hypothesis [12:00];
REM sleep—Why Matt is more bullish on the importance of dream sleep [16:30];
How to increase REM sleep [27:30];
Sleep tracking wearables—criteria for evaluation, and why Matthew favors Oura [35:00];
Does the electromagnetic force of devices have any impact on sleep? [40:15];
The relationship between fasting and sleep [46:15];
Restless leg syndrome [58:10];
Magnesium supplementation as a sleep aid [1:03:00];
The relationship between sleep deprivation and gut health [1:08:30];
The next evolution in sleep science and technology [1:16:30];
Questions Matt would like to explore if money was no issue [1:24:15]; and
More.

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Transcript

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0:00.0	Hey everyone, welcome to a sneak peek, ask me anything, or AMA episode of the Drive Podcast.
0:16.5	I'm your host, Peter Atia.
0:18.3	At the end of this short episode, I'll explain how you can access the AMA episodes in full,
0:22.9	along with a ton of other membership benefits we've created.
0:25.9	Before you can learn more now by going to peteratia-md.com forward slash subscribe.
0:31.5	So without further delay, here's today's sneak peek of the Ask Me Anything episode.
0:39.8	Welcome to a special follow up, ask me anything interview with my guest Matthew Walker.
0:44.4	This is part of a two part interview, the first part being last week.
0:48.6	In this AMA episode, Matthew and I discuss the following.
0:52.3	What has Matthew changed his mind on, or what does he now believe to be true or untrue based
0:57.1	on emerging evidence?
0:58.1	And in particular, he brings up topics around blue light, caffeine, REM sleep, and sleep
1:04.6	wearables.
1:05.9	We also dive a little bit into the topic of sleep and electromagnetic force.
1:09.6	We discuss how fast and can impact sleep.
1:12.0	We talk about restless leg syndrome or RLS.
1:15.1	We talk about magnesium in particular as a sleep aid.
1:18.4	We talk about how sleep can impact the gut.
1:21.2	And we end with an interesting conversation around what Matthew believes is the next
1:25.8	step function evolution when it comes to sleep.
1:29.0	Just as a quick reminder of Matt's credentials, he's a professor at UC Berkeley in the departments
1:34.7	of neuroscience and psychology, and he's the founding director for the center of human
	...

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