When you lay down on a bed and do nothing, not much is different. But when you actually begin to “sleep”, your body starts recharging for the next day, why is that?
In: Biology
There are many psychological theories why this is but there is no objective reason. Some people think it’s to restore our brains overnight while others believe that it is to develop our brain and process our memories. More info here
http://healthysleep.med.harvard.edu/healthy/matters/benefits-of-sleep/why-do-we-sleep
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