It is human balance!
The ear is the sensory organ that enables us to hear, and one of the most important senses, the human being uses the means of speech to understand with others, and that depends on the hearing mainly, and divided into three parts ear: external ear, middle and interior.
Most people do not realize that balance is as important as hearing, sight, and other senses. In the absence of balance, we can not keep our bodies in place.