This is an intermediate ball crunch exercise.

Instructions

  1. Sit straight up on the exercise ball, then walk your feet 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.

  2. 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.

  3. Do 2 sets of 12-15 reps. To increase the intensity of this exercise sit on the ball close to a wall and put feet up against wall. You should not feel low back pain while doing this exercise. Ensure that you are not arching your low back too far. If you still have back pain, discontinue this exercise.