Self-defense art is a term used to describe martial arts that are used for self-protection. Two of the most popular self-defense arts are AIKIDO and Karate, both of which originated in Japan. AIKIDO is a martial art that focuses on using an opponent's energy against them, while Karate is a martial art that emphasizes striking techniques. Jujitsu is another Japanese martial art that is used for self-defense, and it focuses on grappling and submission techniques. All three of these martial arts can be used for self-defense, and they are all effective in helping to protect oneself from harm.