students of the subject conclude that the function of the thyroid gland is to destroy poisonous products formed by the decomposition of proteid food substances. It is believed by others that it also has a defensive action against other poisons in the body, including alcohol and poisonous drugs. In other words, it is thought to have an "antitoxic" action. It has also been held that this organ has much to do with the supply of iodine in the system, being particularly affected by the lack of iodine in the food. Again, it is said that when the thyroid gland has degenerated there ensues a condition of auto- intoxication, followed by a degeneration of other organs which destroy and eliminate poisons in the blood. It is claimed that in many cases of thyroid deficiency, as in cretinism, good results have been obtained by the use of thyroid extract, thus supplying the body with the secretion which normally should have been obtained from this gland.
But, whatever may be the function of this remarkable little organ, the fact remains that it is of tremendous importance to health, being undeniably endowed with extraordinary influence on virility, physical strength and mental vigor. Now these facts were in mind when I commenced the experiments which, as I have said, led to the discovery of a method of stimulating the vital forces of the body. The problem seemed simple in some respects. If the thyroid gland has such a definite effect upon bodily health, the query as to how it can be strengthened and stimulated to perform its work more satisfactorily, assumed unusual importance and I was strongly moved to discover the answer. The problem, however, was not by any means an easy one. A long time elapsed before a satisfactory solution presented itself. The first thought that naturally occurs to one when endeavoring to stimulate the activities of any part of the body is to find some means of increasing the circulation to that part. Ordinary massage will usually accomplish this purpose to a limited degree, though massage to my mind is a superficial agent in many cases. It will increase local circulation, but it does not facilitate tissue changes to the same extent as exercise which directly affects the structures concerned, or the mechanical movements of the parts themselves that are brought about through active use of them in some way. I have known of cases in which pressure and massage applied to the region of the thyroid gland have been followed by harmful effects, such as fainting, and certainly no one with a weak heart should attempt to stimulate this organ in this manner. Therefore, in endeavoring to find a satisfactory means of stimulating this important gland, I did not give massage serious thought. And I might as well say that I finally "stumbled" upon the important truth which is the basis of the method that I am presenting.
For many years I have been a student of vocal culture, having taken up the study of this art chiefly as a recreation, with no thought of ever publicly using any ability I might acquire, though I might mention that the additional vocal strength obtained as a result of this training assisted me greatly in public speaking. While giving my attention to this particular study, I was greatly impressed by the extreme importance of maintaining an erect spine, holding the chin down, inward and backward, and keeping the shoulders back and the chest expanded. I found, however, like many others who become "slack" in bodily posture, that a considerable effort was required to maintain a proper position at all times. I therefore began a series of special exercises intended really to force myself to assume a properly erect position. While experimenting with these exercises for the purpose mentioned, I noted a marked effect upon my general vital vigor. Not only was this made apparent by an increase in physical strength and stamina, but it was marked in an equal degree by additional mental energy and capacity. My mind was clearer, and I could surmount difficulties presented in business enterprises in which I was interested with far more ease than before. I could make decisions more easily and quickly. In addition, a decided gain in weight was noted-not by any means in the form of mere fatty tissue, but of firm, substantial flesh. These very pleasing results induced me to go more carefully into the causes underlying this remarkable improvement. I carried on an elaborate series of careful experiments with a view to proving the conclusions to which I had come in the course of these exercises. It was quite apparent that a full development of the back part of the upper spine was necessary in order to maintain the strength essential to extreme vigor and vitality.

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