Train the body and develop stamina and endurance. But the spirit of competition and power that presides over them is not good, it reflects a distorted vision of life. The root of the martial arts is not there.
"Armed Martial Arts of Japan: Swordsmanship and Archery" by G. Cameron Hurst, G. Cameron Hurst, 3rd, G. Hurst I, (p. 4), 1998.
