6 Pounds Bowling Ball聽is based on the number of bowling pins knocked down in a game. A round is divided into 10 rounds, each round has two opportunities to pitch. Bowling is a whole body sport. Although the process is simple, it requires a coordinated movement of the whole body. Frequent bowling will enable the muscles of the waist and back to be exercised. Bowling will reduce the pressure on work and daily life. Regular bowling can effectively relieve the pressure on work and life.