thecalgars You can either change the default countdown the way acids_burn described (this will apply to all your exercises in all sessions), or you could just decrease the default rest time for that session and use Auto-play mode: this will then limit all countdown values to the rest timer value.

As far as I know when you go to the settings of an exercise there is an option to modify the prep time for the exercise but there’s also an option for a default prep time and I believe that works for all exercises