What is Better When You Get Less Than Four Hours of Sleep?

YOU MIGHT BELIEVE that there’s nothing you can do after a trash night of sleep except to pound caffeine. But a new study reveals a surprising alternative that might just work even better.A study published in Proceedings of the National Academy of Sciences found the next best temporary solution is to exercise. Now if you’re sluggishly running on fumes, adding in a workout can sound borderline torturous. But stay with us for a sec: Only 20 minutes of exercise is enough to give your brain the same boost as a 90-minute nap. Bonus: The workout doesn’t even have to be hard.What Did the Study Find?THE RESEARCHERS REALLY went all-in on creating the most sleep-deprived brains.