Set the timer to 12 minutes

How to use the online timer

A nap that runs past 12 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.

Hit Start whenever you're ready and the timer runs on its own from there, no further clicking required until it finishes. It only counts while the tab stays open, so leave it running in the background rather than closing the browser or navigating away if you need the time to stay accurate. Once it reaches zero, an alarm sound lets you know without you having to keep checking the page.

A browser timer beats digging out the one kitchen timer that's always gone missing, and it's one less thing cluttering your phone alongside a dozen apps you barely open. Everything runs here in the tab, so there's no download, no account, and no permissions to grant before you can start it. Free, with no registration, it's ready the moment you load the page and gone the moment you close it. If you would rather say put a timer on for 12 minutes, that works too — press Start and the page does the rest.