Poorer sleep, weaker bones, an uptick in wear and tear, and weaker muscles are four injury risks for today’s athletes, reports ESPN.

Czeisler said sleep is even more vital for younger players, and thus poor sleep is more harmful. One night of lost sleep is 10 times more detrimental to those ages 18-25 than to those 60 and over, Czeisler said, because younger people’s sleep is much deeper, more restorative, and the body’s “drive” to sleep is more intense.