The other things besides light are timing of food intake, timing of exercise, as well as various drugs or chemicals that one might ingest
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.
The other things besides light are timing of food intake, timing of exercise, as well as various drugs or chemicals that one might ingest
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The other things besides light are timing of food intake, timing of exercise, as well as various drugs or chemicals that one might ingest.
So what what we're talking about when we talk about all these these modalities for improving jet lag. It's not about like preventing jet lag as much as it is just reducing the duration and the severity of the jet lag. And I do think I do think a lot of these work and it makes sense to focus on these things that actually do affect the circadian rhythm in the brain which we know is light, eating, and um exercise. Really, that's that's about it.
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.