3 Korean Martial Arts to Choose From Looking learn of practice martial arts? KJD Martial Arts Academy teaches 3 Korean martial arts: Taekwondo - one of the most popular martial arts and also an olympic sport; Hapkido is a general self-defense martial art that teaches how to defend yourself in a range of different situations; and a sword art comprising sword fighting and patterns known as Gumdo. Our philosophy is that martial arts is more than about self-defence but helps you or your child develop as a person, helping you be better outside the dojang as well. Fitness, focus, character, goal-setting, and self-defence are some of the benefits that come with practicing martial arts at KJD Martial Arts Academy.