The Superman ball lift is a butt-challenging variation on your standard Superman: Lie on your belly, and hold an exercise ball between your feet. Engage your abs, and extend your arms straight out in front of you. As you inhale, squeeze the ball
Stability ball abs belly buster: Sit on ball and lean back with hands on floor behind you, palms down and turned out, legs extended. Bring right knee toward chest (as shown); return to start. Repeat with left knee for 1 rep. Do 12 reps
Hurts like hell --> No Pain No Gain Fat Burning Ab Exercises. Burn fat and slim down while toning up your abs and strengthening your core. Repeat the circuit once or twice more. Click the image to see the moves in GIF form.