"We know that many people eat enough, so that they should be giants of strength, if quantity of food made energy. We know many who eat steaks daily who can scarcely lift their weight. We know that many exercise enough so that they should have bulging, powerful muscles, if exercise alone made these. We know that many are lying about almost all of the twenty-four hours of every day; these should have unlimited strength and energy, if rest made these qualities. You perhaps know of some who have great vitality, and yet who are not powerful, their muscles are not particularly pleasing in contour. You perhaps know many who have superb sex health, and yet they could not run a marathon nor shoulder a sack of wheat. Something else must be necessary before one can have the combination of great energy, large muscles, enormous strength. What is it? It isn't any one factor. It is a combination of conditions that produce these desirable qualities. We shall take up but the most prominent few of them." - Earle Liederman This is a restored and re-formatted edition of Liederman's original 1926 booklet. The text remains exactly as written in 1926. A must have in your collection.