The most important thing to remember for the practice of BaGuaZhang is "a serene heart Hsin and a sharp, concentrated mind Yi," which allows the nerve centers to attune, improving the ability to efficiently coordinate the functions of the various organ systems of the body.
As a result, proper BaGua practice creates a matrix of motion that acts as a sort of magnification effect on the body's lymphatic ability to flush toxins out of the system, and is quite suitable for both martial training and general physical fitness. It is a very direct experience with one's internal energy.