Keep daytime naps short

It can be beneficial to take a quick power nap to relax and rejuvenate. Additionally, quick naps boost mental alertness. However, getting more rest can make you feel sleepy and make it hard to sleep at night.

Limit your nap to 10 to 20 minutes. The longer you nap, the more likely you are to feel groggy afterward. Young adults, however, may be able to tolerate longer naps. After 3 p.m. naps can keep you from sleeping through the night. The optimum time of day to nap might also depend on individual factors such as how much sleep you need when you go to bed, how old you are, and whether you take any medications.