When we go to walk, jump or run, we do this with involuntary stimuli we do it by order of our brain, always coordinated, all our muscles and tendons put hands to work, and in this way we can make the action of jumping or kicking.

Swing arms to walking has no other tasks that keep the balanced trunk and save energy, according to experts. For example, when you move the right leg to take a step, body performs a rotational movement around the vertical axis that passes through the torso. By the principle of conservation of angular momentum, the trunk reacts in the opposite direction. At the same time, the right arm moves backwards, and the left forward, to help preserve the balance.

There are two basic types of movement, flexion and extension, which are not precise terms. We describe these movements in this way: Flex: produced a filling and a lateral extension of the skull. The body through the communication fibridal, enter external rotation. Extension: Occurs a recess and a lateral shortening of the skull as well as a lengthening in the anterior and posterior part of the skull, producing an internal rotation. There are two basic types of movement, flexion and extension, which are not precise terms. We describe these movements in this way: Flex: produced a filling and a lateral extension of the skull. The body through the communication fibridal, enter external rotation. Extension: Occurs a recess and a lateral shortening of the skull as well as a lengthening in the anterior and posterior part of the skull, producing an internal rotation.