Brazilian jiu-jitsu includes grappling.
 In the strongest form of this position, the practitioner works his knees into the opponent's armpits to reduce arm movements and ability to move or counter submission attempts
=== Back mount ===When taking the back mount position (often known in Brazilian jiu-jitsu as the back grab or attacking the back), the practitioner attaches to the back of the opponent by wrapping his legs around and hooking the opponent's thighs with their heel, or locking in a body triangle by crossing one shin across the waist like a belt then placing the back of the opposing knee over the instep as if finishing a triangle choke

