The rear-naked choke is a grappling technique commonly used in martial arts, particularly in Brazilian Jiu-Jitsu and mixed martial arts. It involves positioning oneself behind an opponent and applying pressure to their neck using one arm while securing the other arm around their head. This technique can lead to a submission if executed correctly. To perform the rear-naked choke, the practitioner typically wraps their arm around the opponent's neck and grips their own bicep with the other hand. The choke restricts blood flow to the brain, which can cause the opponent to lose consciousness if they do not tap out or escape. Proper technique and safety measures are essential to prevent injury.