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
Zombie ball Zombie ball The zombie ball is a classic magic trick first introduced by Joe Karson in the 1940s. It remains a staple of many shows to this day. called it one of the most popular tricks in the world. The magician places a large metal ball on a small pedestal on a table. The ball is then covered with a large silk cloth which the magician holds above the ball. The ball then begins to lift into the air and move about under the cloth, before appearing out from under cloth to roll along the upper edge of the stretched-out