average of 44.9 grams of proteid, 38.0 grams of fat, and 253 grams of carbohydrates, with a total average calorie value of 1,606 (compare this with the Voit Diet Standard, page 109), and careful and thorough tests made at the Yale Gymnasium proved that, in spite of this relatively low ration, I was in prime physical condition.

Previously, as before stated, in the autumn of 1901, Dr. Van Someren had accompanied me to Cambridge for the purpose of having our claims closely investigated, with the assistance of physiological experts. The Cambridge and the Venice findings were fully confirmed at New Haven, and striking physical evidence was added by Doctor William Gilbert Anderson's examinations of me in the Yale Gymnasium. This latter test, described on page 24, was more practically important as an eye-opener to both doctors and laymen than were the laboratory reports. I personally showed endurance and strength in special tests superior to the foremost among the College athletes. This was without training and with comparatively small muscle; the superiority of the muscle lying in the quality and not in the amount of it.

Professor Chittenden then became intensely interested in the matter, as did also Professor Mendel; and the former suggested organising an experiment on a sufficiently large scale to prove universality of application or the reverse. He volunteered his services and the use of his laboratory facilities.

At this time, too, I became acquainted with General Leonard Wood[D] and Surgeon-General O'Reilly, of the United States Army. I found both open to my evidence; and, in the case of General Wood, I learned that it was confirmed by his own experience while chasing Indians in the Western wilds. Through them President Roosevelt and Secretary Root became interested, and carte blanche was given General O'Reilly to use the War Department facilities, including the soldiers of the Hospital Corps, for assistance in the proposed experiment.[E]

One of the revelations of our experiments worthy of mention here was that occasional long abstinence from food, say two or three weeks, with water freely available, is comparatively harmless, if "Fletcherizing" is carefully practised when food is again given to the body. Nature prescribes accurately what is to be eaten (often the most unexpected sort of food); and if the food selected by appetite is carefully masticated, sipped, or whatever other treatment is necessary to get the good taste out of it, and the mental state at the same time is clear of fear-thought or worry of any kind, the just amount that the body can use at the moment is prescribed by appetite, and the restoration to normal weight is accomplished with epicurean delight, well worth a spell of deprivation.

THE IRVING FISHER EXPERIMENTS

The tests of endurance, which were conducted by Professor Irving Fisher, of Yale, now President of the Committee of One Hundred on National Health of the American Association for the Advancement of Science, and with the co-operation of the famous athletic coach, Alonzo B. Stagg, formerly of Yale, but now of the University of Chicago—on College athletes, students of sedentary habits, and on members of the staff of the Battle Creek Sanatorium—are of prodigious importance in their relation to the possibilities of human endurance through simple Fletcherizing.

The reports include a test in what is termed "deep-knee bending," or squatting on the heels and then lifting the body to full height as many times as possible. John H. Granger, of the Battle Creek Sanatorium staff, did this feat 5,002 times consecutively in two hours and nineteen minutes and could have continued. He then ran down a flight of steps to the swimming-pool, plunged in and had a swim, slept sweetly and soundly for the usual time, and showed no signs of soreness or other disability afterwards.

Doctor Wagner gave his strenuous contribution to our knowledge of possibilities of endurance by holding his arms out horizontally for 200 minutes without rest—three hours and twenty minutes. At the end of that time he showed no signs of fatigue, and stopped only because of the weariness shown by those who were watching and counting the minutes. These statements seem like exaggerations, but they are not.

Both of these tests can be tried by any one in the privacy of his or her own bedroom.

Doctor Anderson, Director of the Yale Gymnasium, taking advantage of the cue offered by the Yale experiments, which he superintended, practised Fletcherizing in all its branches. At the end of six years he put the muscles thus purified to the test, with the result that he added fifteen pounds of pure muscle to a frame that never carried more than 135 pounds before in the half century of its existence, and demonstrated that the same progressive recuperation that I have enjoyed is open and available to others who have passed middle life.

Mr. Stapleton, one of Professor Chittenden's volunteers, grasped the same valuable cue while serving as one of the heavy-weight test-subjects in the Yale experiments. He reduced his waist measurement to thirty inches and a half, increased his chest measurement to forty-four inches; and has refined his physique until his ribs show clearly through his flesh, while his muscles mount tall and strong where muscle is needed in the economy of efficiency. In the meantime, without training other than that connected with his teaching, he increased the total of his strength and endurance more than one hundred per cent.; and reduced his amount of food by nearly, if not quite, half—as have also Doctor Anderson and myself.

MY ENDURANCE TEST AT YALE

These are merely typical cases of distinguished and measured improvement.

How the movement went on from step to step others have told, and I need not follow it further here.

Two years after I began my experiments my strength and endurance had increased beyond my wildest expectation. On my fiftieth birthday I rode nearly two hundred miles on my bicycle over French roads, and came home feeling fine. Was I stiff the next day? Not at all, and I rode fifty miles the next morning before breakfast in order to test the effect of my severe stunt.[F]

When I was fifty-eight years of age, at the Yale University Gymnasium, under the observation of Dr. Anderson, I lifted three hundred pounds dead weight three hundred and fifty times with the muscles of my right leg below the knee. The record of the best athlete then was one hundred and seventy-five lifts, so I doubled the world's record of that style of tests of endurance.

The story of this test at Yale, when I doubled the "record" about which so much has been written, is this: Professor Irving Fisher, of Yale, had devised a new form of endurance-testing machine intended to be used upon the muscles most