Peter Attia· MD
so right now the data that we have is somewhere around about 65 to 67 degrees is optimal for the sleep of most people
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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.
so right now the data that we have is somewhere around about 65 to 67 degrees is optimal for the sleep of most people
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on average people are more likely to sleep considerably better at 65 than 75.
yes mid-60s is terrific
if you can keep your room at 65 yes none of this matters right
yes Mid-60s is terrific
we typically talk about the mid-60s as an ideal room temp
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.