By eHow Sports & Fitness Editor
Rate: (0 Ratings)
Physio balls, otherwise known as Swiss balls or exercise balls, can add to your fitness routine or be used in physical therapy. The instable and flexible balls require your body's core muscles to engage in order to balance your body. The physio ball bridging exercise will not only work your body's core, it will also work the oblique muscles, helping to build strength in your stomach and back.
eHow Sports & Fitness Editor