Did you know your brain is more active while you're sleeping than during the day? Discover 5 mind-blowing facts about sleep that will change the way you think about rest! From why humans are the only mammals who delay sleep to how lack of sleep can affect your weight, this video has it all. Don't forget to take the poll and test your knowledge on how long humans can stay awake! #SleepFacts #Health #MindBlown
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