Bhang Kum Sool is the defense against a knife attack. When an opponent attacks with a knife from the front of the side, you should avoid the attacks or block his hand and counter with a kick, punch, or joint lock. When training against a knife attack, you must concentrate on the opponent's movement, keeping your mind clear and calm for instant judgement and utilize proper breathing control for better movement. In an actual attack, you should try to avoid the knife by staying outside of the opponent's arm. If a cut is unavoidable, it is better to sacrifice an arm or leg in order to protect the head, chest, and the abdominal area. Bhang Kum Sool prepares the student for knife thrusts, stabs, and side-to-side slashes.