Sit straight up on the exercise ball, and roll your buttocks forward until your back is resting around the ball. Put both hands behind your head, and keep your elbows out. Your feet should both be flat on the floor.
Exhale and crunch forward, keeping your feet flat on the floor and your knees bent. Hold for 2 seconds and release. Repeat for continual reps.
Here you have access to hundreds of exercises with detailed instructions and pictures for each exercise step.
If you are registered you can add these exercises to your personal workout program and create an exercise plan that you can print. And, of course, you can change the program any time as you progress.
You just have to register (it's free) or login!