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
Harvey Ball he started his own business, Harvey Ball Advertising, in 1959. He designed the smiley in 1963. The State Mutual Life Assurance Company of Worcester, Massachusetts (now known as Hanover Insurance) had purchased Guarantee Mutual Company of Ohio. The merger resulted in low employee morale. In an attempt to solve this, Ball was employed in 1963 as a freelance artist, to come up with an image to increase morale. What he created was a smiley face, with one eye bigger than the other. In less than ten minutes, Harvey Ball came up with the simple yet world-changing smiley face. The simplicity