Thus we see that deep breathing, by favoring absorption, promotes the nourishment of the body--will assist in building tissue, in fact. Oxygen is a vital necessity for the body, and it is necessary to absorb a large quantity for the actual needs of the system, while all absorbed over the quantity means added nutrition. Now, deep, or diaphragmatic breathing, infallibly increases the lung capacity, so that the possibility for absorption of oxygen is increased, and health and strength promoted. Deep breathing is as necessary for the proper absorption and assimilation of nutrition as the selection of a well-balanced diet. It has saved thousands of lives, and is a factor in promoting health that cannot be disregarded. “Order is Heaven’s first law,” and nowhere is this law better exemplified than in the human body. Order, or regularity, is an essential for success in human affairs--moral, mental, or physical; but especially in the latter. The successful conduct of large business organizations is only possible by regularity in the performance of every detail of duty. If this be so when only physical results are involved, how much more so is it where vital interests are at stake? The human body is a wonderfully complex piece of mechanism, and if left to itself or rather to natural guidance, its manifold functions are performed with unfailing regularity; and regularity in function means health--irregularity, disease. Mark the rhythmic regularity of respiration, or of the heart’s contractions! Long continued regularity begets habit, which is a form of automatism; hence the necessity of regularity in action along fixed lines, and in consonance with physiological law, that good habits only may be formed. Good habits are absolutely essential to health, which is equivalent to saying that regularity in living is an imperative necessity to that end. Regularity in rising and retiring; regularity in eating and drinking; regularity in exercise, all are equally important. Not only does this regularity of conduct conduce to the attainment and maintenance of perfect health, but it enables the individual to accomplish more within the limits of the day, partly by economizing time, and partly by the added vigor due to improved health.