Swinging your arms when walking has no other task than to keep your trunk balanced and save energy , according to experts. For example, when moving the right leg to take a step, the body makes 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 backward and the left arm forward to help maintain balance.
Why do we move our arms when we walk?
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