Why Do Humans Need Sleep? It Depends On Our Age



Researchers have known for decades that sleep is crucial for our brains, but its main function dramatically shifts depending on our age, according to a new study published in Science Advances. Even during sleep, our brain remains busy. The leading hypothesis is that during the hours we spend in the arms of Morpheus, our brain is either repairing itself and getting rid of toxins or it is learning and...

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