Exercise ball balls have been jumped across at 8.31 seconds.The record for the farthest jump between two Swiss balls was also made by Neil at a distance of 2.3 meters in 2012 A primary benefit of exercising with an exercise ball as opposed to exercising directly on a hard flat surface is that the body responds to the instability of the ball to remain balanced, engaging many more muscles. Those muscles become stronger over time to keep balance. Most frequently, the core body muscles — the abdominal muscles and back muscles — are the focus of exercise ball fitness programs. A major
Nine-ball in a diamond-shaped configuration, with the 1 ball positioned at the front (toward the position of the breaking player) on the , and the 9 ball placed in the center. The physical rack used to position the balls is typically triangle-shaped, usually wood or plastic, and capable of holding all fifteen object balls, although diamond-shaped racks that hold only nine balls are sometimes used. The placement of the remaining balls is generally considered to be random. However, in some tournaments, the ball being to the lesser player must be one of the two balls placed behind the 1 ball at