16 Things You Didn’t Know About Sleep

Sleep is absolutely essential for every human being. Despite scientists still not figuring out the process entirely, we still know a lot about this daily activity. Every mammal, bird and most reptiles, amphibians and fish require sleep to function. Here are 16 things you probably never knew about sleep.

16 Things You Didn't Know About Sleep Infographic

16 Things You Didn’t Know About Sleep Infographic

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