To have powerful abs and burn fat it is necessary to vary your workout. Crunches or Russian twists, one can quickly become bored and in addition, it’s possible you’re not doing the exercises properly. This is fine because we have a simple workout especially designed for the abs using a medicine ball. What a coincidence!The abs workout with a medicine ballRound 11. Alternating slams2. Inverted lunges with a bust rotation3. Raised leg sit-upsRound 21. Alternating slams2. Inverted lunges with a bust rotation3. Raised leg sit-upsRound 31. Overhead slams2. Medicine ball squat3. Mountain climberFor this last round, do 2 repetitions of each exercise. Then do 4, then 6 and continue until you reach three minutes of working out without pause.