Nap in a way that helps instead of hurts
Keep naps short and earlier in the day so they restore without stealing night sleep.
Why it works
Naps draw down accumulated sleep pressure (adenosine). A short early-afternoon nap restores alertness without releasing so much pressure that nighttime sleep onset suffers. A long or late nap discharges too much pressure and can leave you both groggy from deep-sleep interruption and less sleepy at bedtime.
How to do it
- Keep naps to roughly 10–20 minutes to avoid waking from deep sleep groggy.
- Nap in the early afternoon, not late, so it does not push back your bedtime.
- If night sleep is already fragile, skip naps and save your sleep pressure for the night.
Evidence
Studies of short daytime naps show improved alertness and performance, while long or late naps are associated with grogginess and reduced nighttime sleep drive. (observational)
Individual responses vary; for people with insomnia, daytime napping can worsen night sleep and is often discouraged.
Sources
- Brooks & Lack (2006), comparison of nap durations on alertness and performance, Sleep
Common mistake
Taking a long late-afternoon nap to recover from a bad night, which steals sleep pressure and sabotages the next night too.
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More practices for Sleep Hygiene That Actually Moves the Needle
- Keep a consistent sleep–wake schedule
Go to bed and wake within the same ~30-minute window every day, weekends included.
- Get bright light early in the day
Get outside daylight in the first hour or two after waking to set your clock.
- Make the bedroom cool and dark
A cool, dark, quiet room removes the signals that keep the brain in "day" mode.
- Time caffeine to protect the second half of your day
Stop caffeine 8–10 hours before bed so it has cleared before sleep.
- Build a wind-down buffer before bed
Spend 30–60 minutes downshifting so the brain can transition out of high arousal.