The following pages have been prepared under Mr. Sandow's direction and personal supervision. In the practical section appended to the narrative account of the great athlete's early amateur and later professional life, Mr. Sandow has furnished detailed instructions for the performance of his dumb-bell and bar-bell exercises and supplied the reader with a text-book which, he would fain hope, will be useful to the would-be athlete and to all who desire to attain perfect health, increased strength, and the full development of their physical frame.