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.
It runs a little bit long and laggy. - It's like an American clock. [...] It's very it's not quite Swiss, like it's more Berkeley like, which is very relaxed. Oh you know what whatever. So in most adults, the average adult, I should say, your biological clock normally runs a little bit long, it's about 24 hours and 30 minutes, I think was the last calculation.
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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.
In humans it's 24.2 hours.
So it will shift out of the solar day because it's not exactly 24 hours and hence the name sir.
But it's not precise 24 hours. It's a biological clock that is slightly longer than 24 hours in almost everybody. Not quite 25 hours, but somewhere in that gray zone. ... And that's what physiology does to your rhythm. It makes it slightly longer than 24 hours, then resets it in the morning to start it all over again with the morning light as it hits the reset on the rhythm.
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.