Andrew Huberman· PhD
More than 1000 Lux ideal for phase shifting…
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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.
More than 1000 Lux ideal for phase shifting…
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.
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If you wake up before sunrise, turn on artificial overhead lights to help trigger your circadian clock.
You'll notice that even bright overhead lights are only emitting about 4,000 or 5,000 lux. It's going to take a long while of looking at those lights with eyes open in order to set your circadian clock and tell your brain and body that it's morning.
light has to be captured and summed before you enter the circadian dead zone which is the middle of the day.
So looking at your phone or artificial lights is fine if you wake up before sunrise, but it's not going to work to set these clock mechanisms.
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.