Science Trek

Sleep: Why do we need it?

Special | 5m 14s

We spend about a third of our lives sleeping. Sleep rejuvenates our body and help clean out our brain. But what is sleep? Scientists are studying why we sleep, why we don’t and what sleep really means.

Aired: 11/01/18

Rating: TV-G

Video has closed captioning.

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Major Funding Provided by the Laura Moore Cunningham Foundation and the Idaho National Laboratory, Friends of Idaho Public Television and the Corporation for Public Broadcasting