The eruptive complaint was soon discovered to be less severe, even in hot weather, and while I was using a great deal of exercise, in proportion as I abstained from all drinks but water, and ate none but mild food. Owing to the discovery of this fact and to other causes, I chiefly discontinued the use of stimulating food and drink, during the hottest part of the season; though I committed much error in regard to the quantity of my food, and drank quite too freely of cold water. Still I always found my health best, and my body and mind most vigorous at the end of summer, or the beginning of autumn, notwithstanding the very hard labor to which I was subjected on the farm. This increase of vigor was, at that time, attributed chiefly to a free use of summer fruits; for, so deeply had the belief been infixed by early education, that highly stimulating food and drink were indispensable to the full health and strength of mankind, and especially to people who were laboring hard, that, though I sometimes suspected they were not true friends to the human system, my conscience always condemned the suspicion, and pronounced me guilty of a species of high treason for harboring it. This brings up my dietetic history, to the period at which it commences, in the letter to Dr. North. The study of medicine, however, from the age of twenty-four to twenty-seven, and the subsequent study and practice of it for a few years, joined to the changes I made at the same time in my physical habits, and my observations on their effects, led me to reject, one after another, and one group after another, the whole tribe of extra stimulants--solid and fluid.