Bell, the Boxing Timer That Refuses to Negotiate

Field notes

The timer is designed around a specific failure mode: losing the will to keep checking a stopwatch once fatigue sets in. It runs with the screen off, keeps music playing, and uses a bell to mark transitions. Presets include a 20-seconds-on, 10-seconds-off Tabata sequence and a punch-out ladder that rises from 15 seconds to a full minute. The surrounding guides add a 25-minute beginner heavy-bag session and advice for handling form under fatigue.