Andrew Huberman· PhD
every hour and a half or so, we all wake up. Some of you even look around, believe it or not and go right back to sleep. And you don't recognize it. Waking up periodically during sleep is the norm. It is not abnormal.
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The headline is broadly defensible, but the qualifications matter. Effect sizes vary by population, the strongest claims rest on shorter trials, and credible voices push back on how it's typically framed.
every hour and a half or so, we all wake up. Some of you even look around, believe it or not and go right back to sleep. And you don't recognize it. Waking up periodically during sleep is the norm. It is not abnormal.
Every Sunday: the week’s new conflicts and verdict changes — and nothing else.
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Bookmarking — the dossier-vs-overview split is the right call. Most of the time I want overview; sometimes I want receipts.
Would love a "what would change this verdict" RSS feed. Sign me up if it exists.
It is perfectly natural and normal particularly as we progress with age. At the end of our REM sleep period of the 90minut cycle almost everybody wakes up and we make a postural movement. we turn over because we've been paralyzed for so long and the body will also like to shift.
10 minutes of bright outdoor light within the first hour of waking anchors the circadian phase and improves sleep onset that night.
Morning sunlight exposure shifts the cortisol awakening response forward, improving daytime alertness.
Long-term morning sunlight reduces age-related macular degeneration risk.
Sleep regularity predicts all-cause mortality more strongly than sleep duration.
Tracking deep sleep on a wearable accurately reflects EEG-measured slow-wave sleep.
Caffeine has a half-life long enough that consumption after 2pm measurably degrades deep sleep in slow metabolizers.