Fitball exercises. Fitball training will become much more exciting and useful. As a result of such exercises, the abdominal muscles are strengthened, at the same time the load from the legs and joints is removed. In addition, in order to maintain balance on the ball, you will have to make some efforts, thus, fat deposits will be burned more actively. Due to the instability of the sword and constant control of equilibrium, posture of the back improves.