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 are affirmative (●), while five are non-committal (●) and five are negative (●). Magic 8-Ball The Magic 8-Ball is a toy used for fortune-telling or seeking advice, developed in the 1950s and manufactured by Mattel. The user asks a question to the large plastic ball, then turns it over to reveal a written answer which appears on the surface of the toy. An 8-ball was used as a fortune-telling device in the 1940 Three Stooges short, "You Nazty Spy!", and called a "magic ball". While Magic 8-Ball did not exist in its current form until 1950, the functional component was