Taekwon-do ITF is a form of oriental martial art composed of diverse offensive and defensive movements, in which one’s hand and foot, are used as weapons. It employs both graceful movements, powerful and quick techniques at once, thus is helpful for the balanced development of physical ability. The practice of Taekwon-do ITF also has the effect of increasing muscular power and of improving the functions of the heart and lungs. All the movements of Taekwon-do ITF require precision and speed at the same time. Rhythmical change between strength and restraint is also needed in the performance of its techniques.