1. Start by kneeling on the ground and placing one arm on top of the ball.
2. Keeping your abs tight and body parallel roll the ball forward letting your body roll forward with it.
3. Reach a point where it is hard to maintain stability and then using just your arm bring the ball in towards your body.
4. This is a great ab exercise but remember to keep your hips parallel with your body the entire time and just use your arm to move the ball forward and backwards.
