The Triangle Choke is a submission technique commonly used in Brazilian Jiu-Jitsu and mixed martial arts. It involves trapping an opponent's head and one arm between your legs, forming a triangle shape. This position restricts blood flow to the brain, leading to a choke if applied correctly. To execute the Triangle Choke, the practitioner typically starts from the guard position. By using their legs to create the triangle, they can pull down on the opponent's head while pushing their knee against the trapped arm. This combination increases pressure, making it difficult for the opponent to escape.