There are five such centers in the body of man. The breath has its particular work in every center. By the study of mysticism one finds that man's life depends upon the working of the centers. Generally the centers are blocked up on the inner side of the body. Therefore they give but a dim light, if the breath be pictured as a gas and the centers as lanterns. When the centers are not in a fit condition they are wasted; not only this, but man is deprived of the full experience of life.