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Norwegian 4x4 Protocol - Download the Norwegian 4x4 App for scientifically-proven HIIT workouts. Transform your fitness with structured interval training. Available on iOS and Android.
Coountdown - 3 2 1 ! Create day counter on menu bar macOS. 🚀
Intervally - Interval Timer - Sport & Health
Timetaco - Create your own countdowns, as easy as 3, 2, 1
Love HIIT - Free exercise timer, share your workouts
Padbury Clock Screensaver - Minimal screensaver for Mac