A midday nap can feel like pure bliss, or leave you groggy and wide awake at midnight. So are naps good or bad for you? The answer depends on how long you nap, when you nap and why. Used wisely, a nap can boost alertness, mood and performance. Used poorly, it can interfere with your nighttime sleep.
Potential Benefits of Napping
- Improved alertness and performance: short naps can increase focus, reaction time and productivity.
- Better mood: a brief rest can reduce irritability and stress.
- Support after a poor night: naps can partly offset the effects of short sleep.
- Safer driving and shift work: a short nap before a long drive or night shift can help reduce drowsiness.
When Naps Can Backfire
- Sleep inertia: waking from deep sleep can leave you groggy and disoriented for a while.
- Disturbed night sleep: long or late naps reduce your natural sleep drive and can make it harder to fall asleep at night.
- Masking a bigger issue: needing long naps every day may signal poor nighttime sleep or a health problem.
The Ideal Nap Length
- 10 to 20 minutes: the power nap. Light sleep that refreshes you without grogginess. Best for most people.
- 30 minutes: may cause some grogginess if you wake from deeper sleep.
- 60 minutes: includes deep sleep, which can help memory but often causes sleep inertia.
- 90 minutes: a full sleep cycle, which usually allows you to wake feeling refreshed, but it is more likely to affect night sleep.
Best Time to Nap
For most people, the best time is early to mid-afternoon, between about 1 p.m. and 3 p.m., when natural energy dips. Try to avoid napping within about 8 hours of your regular bedtime, especially if you struggle to sleep at night.
How to Nap Well
- Set an alarm for 15 to 25 minutes.
- Find a quiet, dim, comfortable spot, and use an eye mask if helpful.
- Keep the temperature comfortable.
- Do not worry if you do not fall asleep. Resting with your eyes closed is still beneficial.
- After waking, get light and a little movement, such as water and a short walk, to clear grogginess.
Who Should Be Careful With Naps?
If you have insomnia, long daytime naps may worsen your nighttime sleep. Older adults may benefit from short naps but should avoid long ones late in the day. If you need frequent long naps or fall asleep unintentionally during the day, talk to a doctor, since this may point to sleep apnea, narcolepsy or another condition.
Frequently Asked Questions
Is napping every day bad?
Not necessarily. A short daily nap is fine for many people if it does not affect night sleep. Habitual long naps may be worth discussing with a doctor.
Can a coffee nap work?
Some people drink a small coffee right before a 15 to 20 minute nap, because caffeine takes about 20 to 30 minutes to kick in. Avoid this late in the day or if you are sensitive to caffeine.
Final Thoughts
Naps can be a useful tool when kept short and early. Aim for 10 to 20 minutes in the early afternoon, and pay attention to how they affect your night sleep. If naps start to replace good rest at night, focus on improving your overall sleep habits.
Disclaimer: This article is for general information only and is not medical advice. See a healthcare professional if you have excessive daytime sleepiness.