How it works
- Set the seconds of Work and Rest, and the number of Rounds, or pick a preset.
- Press Start. You get five seconds to get ready.
- The ring empties as each part runs. A beep marks every change, with three short ones before it.
- When the last round is over, the timer says so and you are done.
The presets
- 20 s / 10 s x 8: a short, hard session of four minutes.
- 30 s / 30 s x 10: an easy start, with as much rest as work.
- 40 s / 20 s x 6 and 45 s / 15 s x 8: the usual circuit training times.
- 25:00 / 5:00 x 4: blocks of focused work with short breaks.
Not only for the gym
- Studying: blocks of concentration, with a real break between them.
- Cleaning: ten minutes on, two off, and the house is done.
- Language practice: speak for a minute, then swap with your partner.
- Stretching and yoga: hold each position for the same time.
Good to know
Sound starts only after you press a button, because browsers require it. Keep the screen on, and the space bar starts and stops the timer on a keyboard. Times are measured against the clock, so they stay right even if the page falls behind for a moment.
Kept on your device
Everything runs in your browser: no app, no account, nothing sent anywhere. What you change is still here the next time you open the page on this device.