Core Exercise

Exercise balls are very useful in strengthening the body's core (hip, ab, and back area). Innovative abdominal exercises can be done with an exercise ball. Back extensions are good for more advanced exercisers. Even sitting on the exercise ball will cause the core muscles to contract. Exercises like the wall squat, where you put the ball between your back and the wall and lower yourself to a sitting position, strengthen your core as well as your legs.