Kettlebell Protocols
The original Izumi Tabata protocol: 20 seconds work, 10 seconds rest, 8 rounds per Tabata — 4 minutes per block. Configure 1 to 4 complete Tabatas back to back for 4 to 16 minutes total. This timer handles all the work/rest transitions automatically with distinct audio cues, so you can focus entirely on the reps.
Open Timer →Free · No signup · Works offline as a PWA