Lethwei, or Burmese bareknuckle boxing is an ancient full contact combat sport from Myanmar (aka Burma). It uses stand-up striking along with various clinching techniques. Lethwei is considered to be the most aggressive and brutal martial arts in the world because the fighters fight bareknuckle with only the use of tape and gauze on their hands. The use of fists, elbows, knees, and feet, but more surprisingly, the head makes it a very unusual martial art. Although disallowed in many combat sports, in Lethwei, the use of headbutts is encouraged. This is the reason it is also known as “The Art of 9 Limbs”.