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Sleep study: Our Ancestors only slept for up to 7 hours a day

Lights, TV, smartphones and computers are often blamed for depriving modern humans of sleep. But a new study suggests that our prehistoric ancestors didn’t get any more than 7 hours of a sleep a day. The new study, published in the journal Current Biology, also finds that temperature played a greater role than light in shaping sleeping patterns. Prof Jerome ... Read More »

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