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Why We Sleep

Why Do We Sleep?

Quora | Posted 10.20.2014 | Science

A number of proposals and perspectives have emerged that, taken together, paint a compelling and converging picture of why sleep evolved and why it is now needed.

Why Do We Need Sleep? Science's 6 Best Guesses

The Huffington Post | Sarah Klein | Posted 10.27.2013 | Healthy Living

We spend so much time asleep, there must be an important reason for it -- or so the thinking goes. Sleep lies somewhere between bodily function and be...