Tonic Vice: There's a Sweet Spot for Making Your Power Nap Count
"Most of us spend a lot of time exercising, watching what we eat, and seeing our doctors, but we forget there's a whole eight hours per night that affect what we do during the day," says Rajkumar Dasgupta, an assistant professor of clinical medicine at the Keck School of Medicine at the University of Southern California.
Sleep deprivation also has a noticeable effect on cognition—our brains simply don't function as well when we haven't slept enough. "When you're sleep deprived, only bad things happen to your mood, concentration, health, and immune system. It's not good to be sleep deprived," Dasgupta says.