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BELIEVE we must all admit that deep

breathing is a very desirable practice. Furthermore, we know it to be a fact that not one person in twenty, or perhaps one person in a hundred, really breathes deeply. Every physician can verify the statement that we are daily called upon to prescribe drugs for ailments that owe their cause directly to insufficient and improper breathing-Oxygen Starvation.

Breathing is the Vital Force of Life. Every muscle, nerve cell, in fact every fibre of our body, is directly dependent upon the air we breathe. Health, Strength and Endurance are impossible without well-oxygenated blood. The food we eat must combine with abundant oxygen before it can become of any value to the body. Breathing is to the body what free draught is to the steam boiler. Shut off the draught, and you will kill your fire, no matter how excellent coal you use. Similarly, if you breathe shallowly, you must become anæmic, weak and thin, no matter how carefully you may select your diet.

I might continue indefinitely to cite examples of the great physiological value of deep breathing. For instance, it is a wellknown fact that worry, fear, and intense mental concentration practically paralyze the breathing muscles. This depressing condition can be entirely overcome through conscious deep breathing.

The main benefit of physical exercise lies in the activity it gives the lungs. What we term "lack of healthful exercise" in reality means insufficient lung action. Exercise. that does not compel vigorous deep breathing is of little real value. Unfortunately, few persons have the strength and endurance to exercise violently enough to stir the lungs into rapid action. This is especially true of women and also of men who have permitted their muscles to become weak. Common sense, therefore, dictates that the lungs should be exercised independently through deep breathing gymnastics.

Unfortunately, few persons have the slightest conception of what is really meant by deep breathing. In fact, few physicians thoroughly understand the act. Ask a dozen different physical instructors to define deep breathing, and you will receive a dozen different answers. One tells you it means the full expansion of the chest, another tells you it means abdominal breathing, the third declares it means diaphragmatic breathing, and so on.

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Recently there has been brought to my notice a brochure on this important subject of respiration, that to my knowledge for the first time really treats the subject in a thoroughly scientific and practical manner. refer to the booklet entitled "Deep Breathing," by Paul von Boeckmann, R.S. In this treatise, the author describes proper breathing, so that even the most uninformed layman can get a correct idea of the The booklet contains a mass of common sense teachings on the subject of Deep Breathing, and "Internal Exercise." The author has had the courage to think for himself, and to expose the weaknesses in our modern systems of physical culture.

act.

I believe this booklet gives us the real key to constitutional strength. It shows us plainly the danger of excessive exercise, that is, the danger of developing the external body at the expense of the internal body. The author's arguments are so logical it is self-evident that his theories must be based upon vast experience. Personally, I know that his teachings are most profoundly scientific and thoroughly practical, for I have had occasion to see them tested with a number of my patients.

The booklet to which I refer can be obtained upon payment of ten cents in coin or stamps by addressing Dr. von Boeckmann directly at 1957 Tower Bldg., 110 W. 40th St., New York. The simple exercises he describes therein are in themselves well worth ten times the small price demanded.