Lethwei, also known as Burmese bare-knuckle boxing, is an ancient martial art and combat sport from Myanmar (formerly Burma). This striking-based discipline is known for its toughness, simplicity, and directness. In Lethwei, fighters use punches, elbows, kicks, and headbutts, with matches often fought bare-knuckled. This intensity has earned it the reputation of being one of the world’s most brutal martial arts.