Golf, tennis, and bowling are among some of the popular individual sports. Sports in general are tremendously popular in American culture. If you would like to know more about a certain sport, ask an American friend to explain the rules to you. Your school may have a recreation or exercise center with a swimming pool, weight room, sauna, gymnasium, tennis and racquetball courts, basketball courts, and sometimes even a track for running.
Many schools also have aerobics classes, in which the group does exercises to music.
If there is no such center on your campus, you may want to join the local YMCA, YWCA, or a private health club, though membership in such clubs can be expensive. Most schools sponsor intramural teams for students who want to play basketball, volleyball, softball, football, and even soccer. In some cases you will need to form your own team, made up of friends, residents of your dormitory, or students with the same major. These teams offer a good way to have fun and meet people. If your school doesn't have such activities, check with your city's recreation department.