Self-defense technique is a term used to describe any form of martial art or physical activity used to protect oneself from harm. Two popular self-defense techniques are judo and jujitsu. Judo is a Japanese martial art that focuses on throws, joint locks, and pins to subdue an opponent. Jujitsu is a Japanese martial art that uses grappling techniques such as joint locks, throws, and chokes to control an opponent. Both judo and jujitsu are effective self-defense techniques that can be used to protect oneself from harm.