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Light at Night Spoils Sleep and Health

You won’t realize it’s happening, but even moderate light robs you of deep sleep and raises your heart rate

Photo: Unsplash / Shane

Once upon a time, humans slept in total darkness, save perhaps some bright moonlight or a soothing fire at the cave entrance. After millions of years without light switches, we’re evolutionarily programmed to rely on…




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Robert Roy Britt

Robert Roy Britt

Independent health & science journalist writing motivationally about the science of physical health & mental wellness. Former editor-in-chief of LiveScience.

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