Set the timer to 24 minutes

How to use the online timer

A nap that runs past 24 minutes tends to tip into deep sleep and leaves you groggier than if you'd just kept working, so a strict cut-off helps. Set the timer before you lie down, put it somewhere you'll hear it, and trust it to do the waking up so you're not relying on willpower you won't have once you're horizontal. Waking on cue beats waking up an hour later confused.

There's no setup beyond pressing Start, and the countdown handles the rest on its own from that point. Since it runs inside the browser, keep the tab open for the timer to keep an accurate count; you can switch to other tabs in the meantime, but closing this one out resets things. When the countdown hits zero, a sound plays so you're not stuck staring at the numbers.

A phone timer works fine until a call comes in or a notification steals the screen at the worst moment. Running it in a browser tab keeps it separate from all that, ticking away quietly in the background of your computer or phone without competing for attention until it's done. There's nothing to install and nothing to sign up for, just a page that does one job well. People type this as set timer 24 minutes or timer for 24 minutes; both land here and start the same count.