#3 Physioball Crunches
Now, abdominal crunches are a staple of almost every workout. But crunches on a gym ball not only make the exercise more intense and interesting they provide many variations of doing the same.
The first way of doing a physioball crunch is to put your back against the ball with your legs firmly placed on the ground. Make sure that your shoulders are not on the ball. Place your hands on the crown of your head or in front of you and exhale and push your body up.
Another way of doing a physioball crunch is by facing the ball. Placing your elbows on it, while keeping your torso away from the ball. Start by by bending your elbows and placing your knees on the floor. This is your starting position. Then slowly straighten your elbows and extend your torso towards the ball. And then retract back to the original position.
One can do 20 repetitions and 3 sets of this exercise.