Andrew Huberman· PhD
on average men if you look at them will have a sleep cycle that's about 15 to 20 minutes longer than women
Loading…
The evidence is convergent. Multiple independent sources reach the same conclusion, the underlying mechanism is well-characterized, and even the field's most cautious voices treat it as worth doing.
on average men if you look at them will have a sleep cycle that's about 15 to 20 minutes longer than women
Every Sunday: the week’s new conflicts and verdict changes — and nothing else.
Native comments, Twitter mentions, and Reddit threads about this claim — surfaced together so the conversation isn't fragmented across platforms.
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.
we've often and some people probably have heard this before it's a 90minut cycle well there's huge variability some people can have a sleep cycle on average that's maybe 75 minutes others 120 Minutes is it consistent within an individual it is relatively stable within an individual
You cycle through them. And it's about every 90 minutes. Anyone can Google that, but it's not exact. It's they're different across the night.
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.