The mechanism of the human body shows the nervous system as its principal battery, in which magnetism is prepared by the action of breath. It is when the nervous system cannot function that this battery gets out of order and does not work properly. Many in order to make this battery of the nervous system work properly take drugs and other medicines which stimulate the nervous system. But instead of giving power to it they take away power from it, and in the end the nervous system becomes accustomed to all such medicines one takes.