4 Set Full Tabata Workout Interval Timer (20 sec / 10 sec) 20 Minute Workout

Simple and beautiful Tabata Interval Timer (20 sec rest / 10 sec rest) for 4 Sets (32 Reps in total) workout, full workout takes only 20 minutes. If you want some fun activities for the iPad, or some help with computer issues have a look at my other YouTube channel at: