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
Magic 8-Ball the revamped product caught the attention of Chicago's Brunswick Billiards. In 1950 they commissioned Alabe Crafts to make a version in the form of a traditional black-and-white 8-ball. The Magic 8-Ball is a hollow plastic sphere resembling an oversized, black-and-white 8-ball. Inside, a cylindrical reservoir contains a white, plastic icosahedron floating in alcohol dyed dark blue. Each of the die's 20 faces has an affirmative, negative, or non-committal statement printed in raised letters. These messages are read through a window on the ball's bottom. To use the ball, it must be held with the window initially facing down. After "asking