In today’s world the practice of physical exercise has taken vital importance, has become a routine of our daily lives and the science has come into this world in order to improve the health of practitioners in the long term, for that reason the phrase? .this exercise this contra – indicated, also it has been listening very often within the world of the muscles. * It is a contraindicated exerciseDo it is all exercise we do that although us a momentary benefit long-term watchful against our health (rotation of the knee, ankle, etc.) * as rely to know this? hypothesis? The human body is divided into three parts; 1-Head 2 – trunk 3-tips and each part is subject to a shaft; 1-Axle front (divides the body into anterior and posterior) 2-axis vertical (divides the body into left and right side) 3-axis sagittal (divides the body in rear and bottom) movements axis is the vertical axis and based on that axis movements which enables the human body in a way we know natural, the other movements that can be done can bring complications in the future. * Movements by parts body head (neck) * Flexion and extension vertical, horizontal and diagonal * torque side (right and left) Note; The neck should not rotate arms abduction (separation) adduction (approach) pronation (inward rotation) Supination (rotate outward) rotational note; The elbow is not rotated trunk * Flexion and extension (ARC) vertical and horizontal. * Side torque * rotation. Tips * Flexion and extension note; The limbs are filled with joints (knee, ankle) and the joints are not rotated & n bsp; & nbs p; & n bsp; & nbs p; Joel esteban.