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Sleep: You're Doing It Wrong, But We Can Help #refinery29 http://www.refinery29.com/sleep-hygiene#slide9 Lights Off "People do sleep better and longer in a completely blacked-out room," says Dr. Arand. That's because our bodies are very attuned to the light/dark cycle, a holdover from our caveman ancestors. Before electricity, our bodies learned when it was time to be awake and active and when it was time to sleep based on the sun."There are sensors in the eye that monitor the amount of ...