"Health that intoxicates with its power and intensity, is within the reach of all who are willing to reason for themselves, and begin that activity of muscle, mind and body without which there can be no health, for stagnation always means disease and death. Activity is the law of life. A machine made of the finest steel will rust and decay if not used, and the human body is not stronger than steel. To those whose souls are rent by sorrow and pain, to those whose days and nights are heavily laden with the dull dispair of physical weakness and disease, this book is respectfully dedicated. May...