Abs
Back
Glutes
Exercise Ball
intermediate
strength
reps
Steps : 1.) Lay on an exercise ball with the small of your back rested upon the top of the ball. 2.) Begin to roll to one side of the ball until half of your body is on and the other half is off. 3.) After finding your balance, curl your torso up, bringing your belly button in towards your spine and squeeze on your abdominals. 4.) Return back to the starting position and repeat for as many sets and reps as possible.
Alternative Abs Exercises