The two most common kicks in Muay Thai are known as the teep (literally "foot jab") and the teh chiang (kicking upwards in the shape of a triangle cutting under the arm and ribs) or angle kick. The Muay Thai angle kick uses a rotational movement of the entire body and has been widely adopted by practitioners of other martial arts. It is superficially similar to a karate roundhouse kick, but omits the rotation of the lower leg from the knee used in other striking martial arts like most karate or taekwondo because like Kyukushin, Goju, and Kenpo it is done from a circular stance with the back leg just a little ways back in comparison to instinctive upper body fighting(boxing). This comes with the added risk of having the groin vulnerable at all times which is agaisnt Karate and Tae Kwon Do ideology in general except for brief moments after a kick for example. The angle kick draws its power entirely from the rotational movement of the body; the hips. It is thought many fighters use a counter rotation of the arms to intensify the power of this kick, but in actuality the power is from the hips and the arms are put in said position to get them out of the way.
If a roundhouse kick is attempted by the opponent, the Thai boxer will normally check the kick, that is he will block the kick with his own shin. Thai boxers are trained to always connect with the shin. The foot contains many fine bones and is much weaker. A fighter may end up hurting himself if he tries to strike with his foot or instep.
Muay Thai also includes other varieties of kicking such as the side kick and spinning back kick. These kicks are only used in bouts by some fighters.