Exercise ball Exercise ball An exercise ball, also known as a Swiss Ball, is a ball constructed of soft elastic with a diameter of approximately 35 to 85 centimeters (14 to 34 inches) and filled with air. The air pressure is changed by removing a valve stem and either filling with air or letting the ball deflate. It is most often used in physical therapy, athletic training and exercise. It can also be used for weight training. The ball, while often referred to as a Swiss ball, is also known by a number of different names, including balance ball, birth ball, body
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