What a 5 minutes timer is for
Five minutes covers the small rituals: a stretch break, steeping tea, a soft-boiled egg, a warm-up before practice. The page loads with the countdown already set, so the whole interaction is one click.
The timer runs on the browser clock, not a server, so it works offline once the page is open and it keeps counting in a background tab. At zero it plays a short chime; keep the tab unmuted if you plan to walk away.