These wrestling tricks may be learned by studying ways of applying leverage so as to make the best use of the strength available. Rules permitted any hold except strangling, and both arms and legs could be used. Formal regulations adopted later legalized almost unlimited action, including tripping and tackling. The only tactics outlawed were those that endangered life and limb and that could cause permanent injury to an opponent. Many schools and clubs have wrestling teams under the supervision of a coach.
Several states hold annual tournaments for high-school wrestlers.
High schools have classes ranging from 98 pounds to a heavyweight division of 184 to 225 pounds. It also arranges matches in a second style of wrestling, called Greco-Roman wrestling. Greco-Roman wrestling was developed in France and, despite its name, has little in common with the sport of ancient Greece or Rome. Greco-Roman wrestling is much more popular in Europe than in the United States. Both styles are part of the Olympic Games.