If the individual takes reasonable care of his body from the standpoint of proper diet, exercise, sleep, no physical abuse, the body will produce and maintain astonishing energy and sustain itself in good health. If he gives similar attention to a well-balanced emotional life, energy will be conserved. But if he allows energy leaks caused by hereditary or self-imposed emotional reaction of a debilitating nature, he will be lacking in vital force. The natural state of the individual when body, mind, and spirit work harmoniously is that of a continuous replacement of necessary energy.