Also, the Bruce Lee's (famous cinema actor, in the middle of the years 1970) and Jhoon Rhee's (Alan Steen's, Jeff Smith's and Gordon Franks's teacher) idea of fighting with protections and gloves, has opened a new way for all the persons who like "real combat". At the beginning, American kickboxing is rules of competition. Such rules allow the competitors of the various martial practices to compete in a certain kind of fighting (at the beginning that ones of the WKA - World Karate Association). If is so much the main opinion that is become one of the forms of sport of combat produced by the martial arts more practised in the world.