A chokehold is a technique used in martial arts and self-defense that restricts airflow by applying pressure to the neck. This can lead to unconsciousness if maintained for too long, as it cuts off oxygen to the brain. Chokeholds are often used in law enforcement and combat sports, but their application can be controversial due to safety concerns. There are different types of chokeholds, including the rear-naked choke and the guillotine choke. Each has its own mechanics and effectiveness. While they can be effective in controlling an opponent, improper use can result in serious injury or death, leading to discussions about their regulation in various contexts.