At the beginning of practice, you may have more or less trouble in acquiring the Complete Breath, but a little practice will make perfect, and when you have once acquired it you will never willingly return to the old methods. CHAPTER IX. PHYSIOLOGICAL EFFECT OF THE COMPLETE BREATH. Scarcely too much can be said of the advantages attending the practice of the Complete Breath. And yet the student who has carefully read the foregoing pages should scarcely need to have pointed out to him such advantages. The practice of the Complete Breath will make any man or woman immune to Consumption and other pulmonary troubles, and will do away with all liability to contract "colds," as well as bronchial and similar weaknesses. Consumption is due principally to lowered vitality attributable to an insufficient amount of air being inhaled. The impairment of vitality renders the system open to attacks from disease germs. Imperfect breathing allows a considerable part of the lungs to remain inactive, and such portions offer an inviting field for bacilli, which invading the weakened tissue soon produce havoc. Good healthy lung tissue will resist the germs, and the only way to have good healthy lung tissue is to use the lungs properly. Consumptives are nearly all narrow-chested. What does this mean? Simply that these people were addicted to improper habits of breathing, and consequently their chests failed to develop and expand. The man who practices the Complete Breath will have a full broad chest, end the narrow-chested man may develop his chest to normal proportions if he will but adopt this mode of breathing. Such people must develop their chest cavities if they value their lives. Colds may often be prevented by practicing a little vigorous Complete Breathing whenever you feel that you are being unduly exposed. When chilled, breathe vigorously a few minutes, and you will feel a glow all over your body. Most colds can be cured by Complete Breathing and partial fasting for a day. The quality of the blood depends largely upon its proper oxygenation in the lungs, and if it is under-oxygenated it becomes poor in quality and laden with all sorts of impurities, and the system suffers from lack of nourishment, and often becomes actually poisoned by the waste products remaining uneliminated in the blood. As the entire body, every organ and every part, is dependent upon the blood for nourishment, impure blood must have a serious effect upon the entire system. The remedy is plain--practice the Yogi Complete Breath.