Soccer involves short, intense bursts of activity combined with moderately intense exercise and occasion- al rest periods. When played outdoors, the fi eld is larger than a football fi eld, and the average soccer player will cover between 8 and 12 km (5 to 7 miles). T e game consists of two 45-minute halves with a 15-minute halſt ime and may go into overtime, although the game is shorter for younger players. Learn more about the sport at the websites for US Soccer (www.ussoccer.com) and international soccer (www.fifa.com).