Pure Science : What drives us to sleep and determines when we wake up?

#PureScience While there is a big evolutionary benefit to staying awake and alert at all times, we experience an overwhelming need to sleep when deprived of it. What drives this process, how does it help, and what determines when we wake up? ThePrint’s Sandhya Ramesh explains how most of what we understand about sleep is still a mystery that hasn’t been explained neurobiologically.----more----

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