Aerobic - Kuk Sool uses prearranged body movements like that of a choreographed dance routine but the movements are derived from actual combat. This places a demand on the cardiovascular system through martial art training; which is even greater than activities such as swimming, jogging and skiing. This is true because the force required to execute martial art techniques is much greater than those forces involved in sports activity. Therefore, not only is the heart and respiratory rate higher in martial art training but the stroke volume of the heart (the amount of blood pumped through the heart per beat) is greater than in sports activities - leading to superior cardiovascular conditioning. For example, the higher levels of force involved in martial art techniques such as kicking and low stances require much more energy than hand techniques. This is due to the greater weight of the legs compared to the arms and the amount of strength required to execute various kicking techniques and to maintain the body in a low position while working the arms. The workload on the cardiovascular system can be adjusted by increasing or decreasing the duration and intensity of the movement(s). Throughout this practice the mind will become calm and clearer as each movement is initiated by the mind and not sheer muscle strength. Overall balance and stability will improve. Breathing becomes more controlled, smoother and slower. Kuk Sool also aids in building, stimulating and moving of internal energy (ki) which will aid in slowing the aging process.