Wrestling consists of physical engagement between two people in which each wrestler strives to get an advantage over, or control of, the opponent. Physical techniques used, include clinching, holding, locking, application of leverage and takedowns. Today there are a wide range of styles with varying rules. Particular wrestling styles, have particular rules. Also, one can distinguish between traditional and non-traditional styles of wrestling, and wrestling techniques found in military hand-to-hand combat and self-defence systems. Wrestling disciplines defined by FILA, are broken down into two categories; International wrestling disciplines and folk wrestling disciplines. According to the International Federation of Associated Wrestling Styles, there are five current International wrestling disciplines acknowledged throughout the world. They are Greco-Roman Wrestling, Freestyle Wrestling, Submission Grappling, Beach wrestling and Sambo.