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Why can’t we stay awake indefinitely? Science with Sam explains

Sleep is an essential part of the human condition, and we spend around a third of our lives in the land of nod. But what’s really happening when we close our eyes, and why do we need to sleep? We know that without it our ability to perform even simple tasks becomes impaired, but we still don’t know why exactly. This week, Science with Sam explores the mystery of sleep, from why we, and other animals need it, to what happens if we don’t get enough.

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Source: Humans - newscientist.com

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