All Subjects
      All Types

        Info

        Grades

        6-12

        Permitted Use

        Stream Only


        Part of It's Okay To Be Smart
        0 Favorites
        15 Views

        Why Do We Have to Sleep | It's Okay to Be Smart | PBS Digital Studios

        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.

        Contributor:
        Producer:

        You must be logged in to use this feature

        Need an account?
        Register Now