How long should an adult nap?
NHLBI suggests no more than 20 minutes for adults. A short nap may help alertness while limiting the amount of daytime sleep. This is broad guidance, not a guarantee that every person feels refreshed at minute 20. NHLBI healthy sleep habits.
Set an alarm if you need one, and leave time afterward before a demanding task. You do not have to nap to have a healthy routine.
When is the best time to nap?
If you have trouble falling asleep at night, NHLBI suggests limiting naps or taking them earlier in the afternoon. Think in relation to your intended sleep period, rather than assuming a clock time suits everyone.
For an ordinary daytime schedule, a late nap may leave you less sleepy in the evening. The body clock guide explains how time awake and internal timing interact.
What if I cannot fall asleep during the nap?
Avoid making the nap another performance target. You can stop and carry on with your day. A brief quiet break may still be pleasant, but it does not replace sleep. Focus on making enough room for your main sleep period.
What if naps make my nights worse?
Try one adjustment: shorten the nap, move it earlier, or skip it. Keep a few notes about the nap’s time and length and how bedtime felt. A single restless night cannot establish the cause.
Also notice whether a late caffeinated drink or an unusual schedule changed the day. A nap can be one part of the pattern, rather than the entire explanation.
Does this advice apply to shift workers?
Shift workers may use naps as part of a different sleep plan. A daytime worker’s rules should not be applied unchanged to an overnight schedule. If you struggle to adapt or cannot get enough sleep, discuss your actual shift and sleep times with a clinician.
When is sleepiness more than a reason to nap?
Repeated unintentional dozing or persistent daytime sleepiness deserves attention, especially when you have allowed enough time for sleep. Do not use a nap to make driving while sleepy seem safe. Seek individual advice rather than relying on a longer nap to cover a recurring problem. CDC: sleep quality and getting help.
PUT IT INTO PRACTICE
One change. A few observations.
Use a simple notebook to notice what helps, without grading your nights.
Open your seven-night notebook →Sources are linked beside the relevant claims. This guide is educational and has not been individually reviewed by a clinician. Our editorial approach.