Why Humans Need Napshttps://returntonow.net/2018/11/05/why-humans-need-naps

“What’s amazing is that in a 90-minute nap, you can get the same benefits as an eight-hour sleep period,” said study author and psychologist Sara Mednick.” And actually, the nap is having an additive benefit on top of a good night of sleep.”

Napping helped improve memory test scores even more than caffeine, Mednick found in a follow-up study in 2008.