For an activity most of us spend about a third of our lives doing, there’s a lot scientists still don’t understand about sleep, including why we evolved to do it in the first place. But experts do know that we wouldn’t survive without it, and not getting enough can ravage our health in various ways.
So, are you a skilled sleeper or a subpar snoozer? Take our quiz to find out.
Caroline Hopkins Legaspi is a Times reporter focusing on nutrition and sleep.
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