Rajesh Mehtani

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How many hours of sleep do you actually need?

It depends on how well you want your brain to work<p>Sleep is a time suck. If you multiplied the average recommended number of hours we should sleep in a day—eight for a typical adult—by the number of days in an average lifespan (78.8 years in the United States), that would amount to about 9,587.3 …