Offers a More Stable Base for Balance Strengthening Can be Use Vigorously Challenge Postural Reflexes Work the Abdominal Muscles 2 Critical Tool in Every Therapy Fitness Facility 3 Offers Great Stability by Limiting Movement Forward Backward The unique peanut shape allows a therapist patient to share ball, until the patient has the confidence to work alone. Used by physical therapists worldwide, the ball offers stability treatment options for more physically challenged patients. It s unique shape allows a therapist to work on activities that otherwise may be somewhat risky on a traditional therapy ball. Additionally, it offers the individual exerciser the opportunity to exercise on the ball without the fear of rolling off to the side, since it provides lateral stability and is more stable than traditional round balls due to the fact that it will roll in one direction onl