40/15 Interval Timer | 40s with 15s rest (20 Rounds) | Workout Timer No Music Channel: Zen Pulses139 views • 01/03/2026Related VideosInterval Timer Without Music - HIIT 40 sec Work / 20 sec Rest | 74Interval timer - 40 sec rounds / 20 sec rests (including links to 19 workout routines)Interval Timer With Music | 40 sec rounds 20 sec rest | Mix 101Interval Timer With Music 40 rounds 15 sec rest | Mix 103
