Exercise ball standard exercises, such as a push-up, on an unstable surface can be used to increase activation of core trunk stabilizers and in turn provide increased trunk strength and greater resistance to injury. Fitness Experts and some doctors also recommend sitting on an exercise ball instead of an office chair. That is based on the theory that the abdominal and back muscles are constantly engaged and active to maintain proper posture and balance on the ball. There is no scientific evidence of those benefits occurring by just sitting without additional exercises. However, some people warn against using a Swiss ball as
Medicine ball whilst holding it. Some medicine balls are up to 14" wide and up to 14 lbs weight, or in the form of weighted basketballs. A med ball is used for children training as the best way to overcome fear of free weights exercises. Hippocrates is said to have stuffed animal skins for patients to toss for “medicinal” purposes. Similar large balls were used in Persia in 1705. The term "medicine ball" dates back to at least 1876, in "American Gymnasia and Academic Record", by Robert Jenkins Roberts, Jr. Medicine ball A medicine ball (also known as an exercise ball, a