But those who have never lived in this "world" of fiery ambitions and throbbing powers, who have never been stirred by the keen, satisfying joys that go with these extraordinary, vital qualities, may ask if these invaluable powers can be developed. Are these stirring, vital forces the possession of favored classes only, or may they be obtained by anyone and everyone? In other words, can they be cultivated or developed? My reply, in nearly all cases, would be in the affirmative. There may be exceptions. There is a limit to the development of the physical force, but health is attainable by the majority. So long as there is life you should be possessed of sufficient vitality to attain a normal degree of health. It really takes more power to run a defective machine than it does to operate one in which all parts are working in harmony, and the same can be said of the body and its parts or organs. Therefore, if you have vitality enough to continue to live even though diseased, rest assured that you have enough to acquire health if you conform to Nature's enactments. And this kind of health usually brings a physical and mental exaltation that is truly beyond description.

It is my purpose in these pages to help the reader to solve the problems associated with the attainment of vitality and health at its best. By following out the suggestions which you will find in this volume, by stimulating the life-forces in connection with the thyroid gland, by straightening and strengthening the spine, by toning up the alimentary canal, and by adopting other suggestions set forth in these pages, you should be insured the attainment of vital vigor really beyond price. Do not be satisfied with an existence. If life is worth anything, it is worth living in every sense of the word. The building up of one's physical assets should be recognized as an imperative duty.

[CHAPTER II: Functional Activity-The Secret of Power]

Vitality means normal functioning. When the organs of the body are all performing their duties satisfactorily, you can practically be sure of a plentiful supply of vitality. So it can truly be said that proper functioning is the secret of power.

The most important of all functional processes begins in the stomach. There is where the blood-making process commences, and, since a man is what the blood makes of him, you can realize the tremendous importance of this particular function. If the digestion is carried on properly, and the blood is made rich in those elements that add to life, health and strength, then the functions of the stomach are being properly performed. Strength of this organ, therefore, is absolutely indispensable in vitality building.

This blood-making work is then continued by the small intestines, where a large part of the elements of nourishment essential to life are assimilated, taken up and carried to the portal circulation, thence to the lungs and heart, and finally throughout the entire body. It is absolutely impossible for one to enjoy the possession of a high degree of vitality, or of the general good health upon which vitality depends, unless the intestinal tract is in a healthy and vigorous condition, so that the functions of this particular part of the body- machine may be performed without a flaw. The entire digestive system may be compared to a boiler supplying the energy by which the engine does its work.

Then consider the heart itself. One cannot underestimate the functional importance of this organ. It is commonly regarded as the most vital spot in the body, the very center of life-indeed the poets have made it the seat of love and the emotions in general. If anything, the brain and nervous system should be regarded as the real center of life, but the function of the heart, the marvelous muscle-pump, is so vital and indispensable that the world is accustomed to thinking of it as the organ of first importance. And so it is. Should it cease its efforts for a few moments even, life becomes extinct, and you are no longer an animate being. A strong heart, therefore, is if anything even more important than a strong stomach. But you must remember that the strength of the heart to a large extent depends upon the cooperation of a strong stomach, or at least upon the proper digestion of food. For the muscles and tissues of the heart, like those of all other organs of the body, are fed by the blood, which depends for its life-giving and life- sustaining qualities upon the food, which is first acted upon by the stomach and thus made available for use by the cell structures in all parts of the body. The heart is truly a wonderful organ, the one set of muscles which apparently never rest, but work on night and day, year after year, throughout our entire life.

Furthermore, the part played by the lungs in the maintenance of life and health cannot be underestimated. Impaired functioning of the lungs has an immediate and vital effect upon every other part of the body. It is through this channel that we secure the oxygen, without which the processes of life would terminate almost instantaneously. It is through this channel also that the elimination of carbonic acid gas is accomplished. Without the continuous and thorough elimination of carbonic acid our tissues would become choked up and poisoned in such a way that all cell activity and bodily function would come to an abrupt end. If the lungs are sound and healthy in every respect the supply of oxygen is abundant, and the elimination of carbonic acid, which may be regarded as the "smoke" of the human system, is carried on perfectly. Breathing is only one of the various functions that must be continuously carried on, but it is of such importance as to require special attention in building vitality.

In the work of eliminating impurities and keeping the system clean the kidneys are to be classed with the lungs, although they have to do with poisonous wastes of a different type. Insufficient functioning of the kidneys is not so immediately fatal as the failure of the lungs to do their work, but proper action of the kidneys is none the less important. If the poisons which are normally eradicated from the system in this way are allowed to remain or to accumulate, they poison the body as truly as any external toxic element that could be introduced. Insufficient activity of the kidneys leads to the accumulation of those poisons, bringing on convulsions of the most serious nature, and unless the condition is relieved there will be fatal results. The requirements of health, therefore, demand that the kidneys should be strong and active, and that their functional capacity should be maintained at the highest degree of efficiency.

In supplementing the work of the kidneys and the lungs, the excretory function of the skin is only secondary in importance. The skin has various functions. It is one of our chief organs of sense, the sense of touch being hardly second to those of sight and hearing. It is likewise a wonderful protective structure, and at the same time is a channel of elimination which cannot be ignored with impunity. To interfere with the eliminative function of the skin by absolutely clogging the pores for a period of several hours means death. One may say that we really breathe through the skin.