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Why Sleep

Why Do We Need Sleep? Science's 6 Best Guesses

The Huffington Post | Sarah Klein | Posted 10.27.2013 | Healthy Living

We spend so much time asleep, there must be an important reason for it -- or so the thinking goes. Sleep lies somewhere between bodily function and be...

WATCH: Why Do We Sleep?

Posted 08.15.2013 | Healthy Living

Circadian neuroscientist Russell Foster studies the science of sleep. But, he says, we still don't know everything when it comes to slumber, despite t...