Breathing exercises will not give proper results if the channels of the breath are not 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 become void of grace and beauty when sitting, or standing, or walking, or moving; in every action one expresses a weakness, a lack of spirit. Feebleness is different from lack of spirit. A person may be strong bodily but may lack spirit, and the teaching of Christ is that "it is the spirit that quickeneth, the flesh profiteth nothing."