Set the timer to 64 seconds

How to use the online timer

A proper warm-up doesn't need to be long, and 64 seconds is enough to get your muscles moving and your heart rate up before you jump into the main session. Start the clock, run through a few dynamic stretches or some light cardio, and let the beep tell you when to switch rather than cutting it short because you're keen to get started. Rushing this bit just costs you later.

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 mechanical timer needs to be wound and a phone timer needs the phone unlocked, but this one just needs the page you already have open. It sits inside your browser, ready whenever you are, and it's the same tool whether you're on a laptop or a tablet in the kitchen. Free, with nothing to install or sign into, it's built to get out of your way and count. Set a timer for 64 seconds, set the timer to 64 seconds, start a 64 seconds timer — it is the same countdown either way.