Sport involves all kinds of physical activity of competitive nature. Sport’s mission is not only to train physical abilities or skills. It also provides entertainment to participants and spectators. There are hundreds of sports played worldwide. Some of them require only two participants and some involve whole teams. The largest sport competition in the world is known as the Olympic Games. To ensure fair competition sports are governed by a set of rules and customs. It is necessary to understand the benefits and importance of sports. People, who do regular sports, look fit, healthy and attractive. More than that, they learn to compete and to win in everyday life. It is even more beneficial if the sport is enjoyable. Among the most popular sports are football, basketball, swimming, tennis, ice hockey, gymnastics, and figure skating. The word “sport” comes from Old French and means “leisure”. Sport is distinguished by a set of criteria. First of all, it should contain elements of competi