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
Eight-ball the opponent of the fouling player wins. Most commonly of all in American – sometimes called straight eight by its aficionados, and usually played on coin-operated, smaller tables – a requirement may be that all shots be . This typically includes what balls and bank/kick cushions will be involved in the shot, and in what order. The shot considered a turn-ending (but not ball-in-hand) foul if not executed precisely as planned, but a loss of game if the "foul" shot pocketed the 8 ball. Contrariwise, some Americans hold that nothing other than the 8 ball has to be called in