By eHow Sports & Fitness Editor
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Physio balls are versatile exercise tools that can be used by people of all ages and body types as part of your fitness routine or in physical therapy. The instability of physio balls engage your muscles as you work to maintain balance throughout the exercise. A simple physio ball stretch for your back will not only help to relieve pain and tension in the spine, it will also help stabilize your core muscles.
eHow Sports & Fitness Editor