Losing Sleep Can Actually Make You Dumber

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In case you’re wondering if you should stay up an extra few hours to binge watch Daredevil instead of going to sleep: Don’t!

Studies show that losing an hour of sleep is basically like regressing your brain development by two years. Sixth graders in a study who stayed up past their bedtimes by one hour performed at a fourth grade level on basic tasks, which is horrifying. Like, in fourth grade I thought scrunchies were a good idea.

NurtureShock reports: “Teens who received As averaged about fifteen more minutes sleep than the B students, who in turn averaged fifteen more minutes than the Cs, and so on. Wahlstrom’s data was an almost perfect replication of results from an earlier study of over 3,000 Rhode Island high schoolers by Brown’s Carskadon. Certainly, these are averages, but the consistency of the two studies stands out. Every fifteen minutes counts.”

In another study, a lack of sleep was linked to poor impulse control as well as trouble just being happy, causing you to forget happy memories and actually focus on miserable ones. If you needed any reason to turn off your phone and hit the hay early tonight, let it be your own happiness. Seriously, everything will still be there in the morning—and you’ll be much better able to deal with it if you’ve had an adequate night’s rest.

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