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
Wiffle ball Wiffle ball Wiffle ball is a variation of the sport of baseball designed for indoor or outdoor play in confined areas. The game is played using a perforated, light-weight, resilient plastic ball and a long, typically yellow, plastic bat. Miniature versions of baseball have been played for decades, including stickball, improvised by children, using everything from rolled up socks to tennis balls. The ball most commonly used in the game was invented by David N. Mullany at his home in Fairfield, Connecticut in 1953 when he designed a ball that curved easily for his 12-year-old son. It was named when