"Man is what he eats," is a truism quite widely appreciated theoretically, but sadly disregarded when put into everyday practical use. Nor is this true only of the unprofessional multitude but applies with almost equal force to the great army of physicians who by their habits say in the most forcible manner, "Do not eat as I eat but eat as I tell you."
This being the case, and as an ounce of good example is worth pounds of precept, unless put into practice, let us see what influence a rational system of dietetics, pure air and plenty of exercise would have on the growth and development of the rising generation. I say rising generation because the time spent in trying to reform confirmed transgressors whose habits have become fixed by years of indulgence, is largely lost and can be spent to much better advantage in preventing the formation of
STUVER E. THE RELATION OF FOOD, AIR AND EXERCISE TO HEALTHY GROWTH AND DEVELOPMENT.. JAMA. 1898;XXX(7):362-363. doi:10.1001/jama.1898.72440590022001f