As a traditional sport, wrestling has constantly evolved, so that today we have a large number of styles and rules, from sumo wrestling, judo, to various variants of freestyle. Wrestling is often used in military training so-called hand-to-hand combat. For all styles there is one common rule that it is forbidden to hit the opponent with hands, legs, elbows and head, as well as unsportsmanlike moves such as scratching, biting, blows to the genitals, etc.

The difference between certain styles is in the duration of the match, the scoring of individual grips and the list of allowed grips.