Andrew Huberman· PhD
I definitely sleep better with the phone out of the bedroom some people are now turning off their Wi-Fi at night
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We can't find evidence that holds up here. Proponents are reasoning from mechanism or analogy rather than direct human data, and the most credible skeptics raise objections we can't dismiss.
I definitely sleep better with the phone out of the bedroom some people are now turning off their Wi-Fi at night
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Phone in bed = bad sleep.
There are a couple of small studies suggesting that phone proximity to you during the night can negatively affect sleep.
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.