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
Andrew Ball (Townsville pioneer) when Black asked Ball to explore the country to the north, to find a suitable port at Cleveland Bay from which to handle station produce. Ball, accompanied by Mark Watt Reid and two Aboriginal stockmen, set out in April 1864 and eventually found the mouth of what later was called the Ross River. The site Ball selected for a wharf and port was on Ross Creek, a tributary of Ross River. Lying beneath the huge sandstone outcrop of Castle Hill, the location reminded Ball of Castletown, the capital of the Isle of Man, and that was what he called the