ZZZ...

Six scientific reasons why your brain needs you to sleep more

by Jennifer Walter
Updated: 
Originally Published: 
The photo of sleeping koala
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Ah, the mystery of sleep. We need so much of it, and yet scientists still don’t fully understand why.

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But we do have an idea of what can happen if we don’t sleep: conditions like fatal familial insomnia, if untreated, can be deadly.

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