Hapkido is a Korean martial art that focuses on practical self-defense techniques that involve joint locks, throws, kicks and strikes. Synonyms that are similar to hapkido include aikido, jujitsu, and judo. Aikido is a Japanese martial art that incorporates similar techniques to hapkido, but is often considered to be more philosophical and spiritual. Jujitsu is another Japanese martial art that emphasizes grappling and ground fighting techniques. Judo is a traditional Japanese martial art that also emphasizes throws and joint locks, but is often practiced more as a sport rather than a self-defense technique. Regardless of the specific martial art practiced, physical fitness, discipline, and mental focus are all critical components of success.