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Why Do We Have to Sleep

Season 3 Episode 48

About the Episode

Why do we sleep? We spend a third of our lives in slumber, but science has yet to determine exactly why we have do it. Here’s a look at how sleep works, why we’re not getting enough sleep, what happens if you DON’T sleep, and an idea about where sleep came from in the first place.

Aired: 09/27/15 | Expires: | Runtime: 7m 54s
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