CBS News |
Bad sleep may be an evolutionary survival tool
CBS News Trouble sleeping is a common complaint among older folks, but what if their insomnia traces back to prehistoric times when Grandma and Grandpa were in charge of keeping the cave safe at night? A new study of modern hunter-gatherers in northern ... Sleeping less in old age may be adaptation to survive in wild Trouble sleeping? It might be your body's way of protecting you from nocturnal threats Chronotypes: Evolution Explains Night Owls and Early Birds |
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