Basically it's get 10 to 30 minutes depending on how bright it is, and try and do that as often as possible to give the system a regular source-
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.
Basically it's get 10 to 30 minutes depending on how bright it is, and try and do that as often as possible to give the system a regular source-
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.
I would say 15 minutes is probably fine. Um, 30 minutes is probably better. Like a morning walk or a morning run is actually probably perfect. Um, and because what's happening, it's not only that daytime, the other thing it's doing, and we'll talk about this more when we talk about supplements, but melatonin. So melatonin naturally your your natural melatonin will drop in the morning down to like from its peak to almost nothing. Light suppresses melatonin naturally. That's what it does. And so the earlier if your melatonin is still kind of high and it's dropping by getting that light, you accelerate its ability to drop.
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.