Nap, power nap or siesta: what is the difference?
Nap is the broad everyday term for a sleep outside your main sleep period. Power nap usually means a brief nap intended to help you feel more alert afterward. The word “power” is not a promise about how you will feel when the alarm rings.
Siesta commonly refers to a rest or sleep around the middle of the day. These everyday labels do not define one universal number of minutes. If someone says “I am taking a nap”, ask when they want to be back rather than guessing from the label.
Does lying with your eyes closed count?
If you stay awake, you are resting rather than sleeping. That does not make the pause a failed nap. You can choose a quiet break without needing to prove that sleep happened.
Think of two different goals: giving yourself a pause, and actually falling asleep. You can arrange the first; the second is not a button you press. A phone timer records elapsed time, so a completed session does not tell you exactly how much of it you slept.
A simple first-break example
Imagine a free half hour in the early afternoon. Choose somewhere comfortable, decide when you need to return, and leave room on both sides of the timer. An example is three minutes to settle in, a 15-minute countdown and the remaining time to get up without rushing.
This is a scheduling example, not a tested formula for recovery. If you stay awake, finish the break at the planned time. If you wake feeling foggy, allow more time before demanding tasks. Our timer guide explains the calculation.
How short is a short nap?
NHLBI recommends that adults limit naps to no more than 20 minutes. It also advises limiting naps or taking them earlier if you have trouble falling asleep at night. [1] Time on a timer and actual sleep are different, so use this guidance to plan a brief opportunity rather than trying to measure sleep with a countdown.
For the details, read about nap duration and timing your break. A longer nap is not automatically a better pause.
Common beginner questions
Do I need an app?
No. An ordinary alarm can mark the end of your break. An app can make your preferred timer, sounds and settling-in time easier to reuse.
Must I nap every day?
No. Start with a break that fits your day instead of creating another daily obligation. Naps do not replace your main sleep.
Do animals take naps too?
Some do, though their sleep patterns can be very different. Meet five examples in our animal nap facts, from daytime nests to sleep on the wing.