Researchers have found one big reason sleeping is so important to your brain

Ever have a poor night's sleep and wake up the next day feeling foggy and slower than normal?

That's because when you lose out on sleep, you're not giving your brain the opportunity to clean up after a long day of work.

Researchers found that while you sleep, the brain flushes out dangerous proteins that it makes during the day.

Jeff Iliff, a neuroscientist at Oregon Health & Science University, explained during a Ted Talk that while brains are unusually active during sleep, they're...

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