the less and less sleep that you get it's not a linear increase in your risk of a car accident it's an exponential increase
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 less and less sleep that you get it's not a linear increase in your risk of a car accident it's an exponential increase
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when you were on 4 hours of sleep it was close to a 10 times greater risk
when you get down to 5 hours of sleep there is I think it's something like two Three Times Higher likelihood of an accident based on real data
they looked at the risk of acute injury 236 per increased risk in the people getting four hours of sleep versus eight hours
people who were sleeping 4 hours a night had a 236 increased risk of acute injury versus people who slept 8 hours a 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.