Advanced Hamstring Exercise. Due to the position you are in and the fact that your using an exercise ball you will also working your core for stability.
- Begin by laying on the floor on your back, arms crossed over your chest, with your heels on the exercise ball. Lift your buttocks off the floor into a bridge position. Lift one leg towards the ceiling.
- Using the leg that it still on the exercise ball, slowly bend the knee, pulling the exercise in toward you. Hold for a few seconds, then extend your leg back to the starting position. Do about 5-10 reps of this to begin, and then switch legs.