This is a progression on 3.0, 2.0 and 1.0 so be sure to master those before embarking on this spicier version. Burn belly fat fast at home with this equipment-free rapid fat loss HIIT cardio workout! Remember- you need to go fast with max effort to get the most out of the shorter work periods of the 20/10 Tabata Interval protocol (the exception is isometric holds).