First and foremost, Tai Chi Chuan is a martial art intended for self-defense. Yoga isn't one of them. Chi Kung is included into Tai Chi Chuan, although it is not Tai Chi Chuan. Chi Kung, like Yoga, is a set of motions or exercises undertaken for health purposes. Chi Kung classes, on the other hand, need less flexibility because they are taught standing up. The ancient Chinese meditative martial art is performed both with and without weapons. It is a "soft martial art," as opposed to karate, which has hardness and breaking tests. Tai Chi forms and stances are performed in flowing motions with breathing exercises.