Andrew Huberman· PhD
blue AND green wavelength glasses (~$160-180) for after sundown. They last a long time and improve wakefulness and focus and sleep in major ways.
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The headline is broadly defensible, but the qualifications matter. Effect sizes vary by population, the strongest claims rest on shorter trials, and credible voices push back on how it's typically framed.
blue AND green wavelength glasses (~$160-180) for after sundown. They last a long time and improve wakefulness and focus and sleep in major ways.
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Native comments, Twitter mentions, and Reddit threads about this claim — surfaced together so the conversation isn't fragmented across platforms.
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These are designed to be worn in the evening after the sun goes down and they block some of the other wavelengths that go into the green portion of the spectrum. This makes a tremendous difference from traditional blue blockers.
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.