I use a repeating countdown timer to time stretches and other light exercises. Pretty straightforward: set 40 seconds and enable the restart toggle. The thing is... when the countdown is done the countdown restarts as expected but watch also won't stop vibrating and chirping until some button is pressed! For some uses I can see how this is handy to not miss your timer... but for my use it would be much easier to get a quick chirp and a buzz and not to have to hit any buttons. I'm often changing positions between stretches and it's awkward to reach for the watch all the time.