Muay Thai is a hard martial art from Thailand that uses kicks. Muay Thai is referred to as the "Art of Eight Limbs" or the "Science Of Eight Limbs" because it makes use of punches, kicks, elbows and knee strikes, thus using eight "points of contact", as opposed to "two points" (fists) in Western boxing and "four points" (hands and feet) used in sport-oriented martial arts.
Various forms of kickboxing have long been practiced throughout mainland Southeast Asia. Based on a combination of Chinese and Indian martial arts, practitioners claim they date back two thousand years. In Thailand, Muay Thai evolved from muay boran (ancient boxing), an unarmed combat method which would probably have been used by Siamese soldiers after losing their weapons in battle. Some believe that the ancient Siamese military created Muay Thai from the weapon-based art of krabi krabong but others contend that the two were merely developed alongside each other. Krabi Krabong nevertheless was an important influence on Muay Thai as can be seen in several kicks, holds and the movements in the wai khru which have their origins in armed combat.
Like most competitive full contact fighting sports, Muay Thai has a heavy focus on body conditioning. Muay Thai is specifically designed to promote the level of fitness and toughness required for ring competition. Training regimens include many staples of combat sport conditioning such as running, shadowboxing, rope jumping, body weight resistance exercises, medicine ball exercises, abdominal exercises, and in some cases weight training. Muay Thai practitioners typically apply Namman Muay liberally before and after their intense training sessions.
Curently there's professional kickboxing competitions in the state of California sanctioned by the California State Athletic Commision.
Currently there's an amateur governing body which is the California State Athletic Commision which sanctions any amateur events in the state of California.