Twenty minutes for rest and effort
Twenty minutes is about the longest nap that still keeps most people out of deep sleep, which is why it is often called a power nap. A twenty-minute HIIT session, such as 40 seconds of work and 20 of rest, is a complete workout if you push the work intervals. For children, 20 minutes is a realistic homework block before a break. If you look at screens all day, the separate 20-20-20 habit helps: every 20 minutes, look 20 feet (6 m) away for 20 seconds.
What a 20 minute timer is good for
- a nap that does not leave you groggy
- a 20-minute HIIT session
- a quiz or test section
20 minutes is 1,200 seconds. If you start now, it ends at the time shown in the tab title.
How to use it
Press Start or the space bar. The bar fills as time passes and a soft chime plays at zero. Keep the tab open; the timer keeps time even if your screen dims.
FAQ
Why do power naps last about 20 minutes?
After roughly 20 to 30 minutes many people drift into deep sleep, and waking from it leaves you groggy. Stopping at 20 keeps the nap light.
Does the 20 minute timer make a sound?
Yes, a soft three-note chime plays twice when the countdown reaches zero. Tap Start once first so your browser allows sound.
Can I change the time?
Tap the big numbers and type a new time, for example 7, 7:30 or 1:15:00.