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
Beach ball Beach ball A beach ball is an inflatable ball for beach and water games. Their large size and light weight take little effort to propel; they travel very slowly and generally must be caught with two hands. They became popular in the beach-themed films of the 1960s starring Annette Funicello and Frankie Avalon. These movies include "Beach Party", "Muscle Beach Party", "Beach Blanket Bingo" and "How to Stuff a Wild Bikini". Beach balls range from hand-sized to over across or larger. They generally have a set of soft plastic panels, with two circular end panels, one with an oral inflation