Sleep Toolkit: Tools for Optimizing Sleep & Sleep-Wake Timing

Use a red light, rather than a standard one, if you read before bed. Whether you are or are not highly susceptible to circadian disruption from medium-intensity, blue-shifted light in the evenings,…

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The body clock is most responsive to sunlight in the early morning, between 6:00 a.m. and 8:30 a.m. Exposure to sunlight later is still beneficial but doesn’t provide the same benefit.