Breathing exercises will not give proper results if the channels of the breath have not been cleared. The spine, the lungs, the tubes and veins of the body, the intestines should be kept clear. When the channels of the breath are blocked man feels heavy, depressed, lazy, drowsy, and confused; the expression becomes dull and the voice harsh; then the movements lose grace and beauty when sitting, or standing, or walking, or moving; in every action one expresses a weakness, a lack of spirit.