""Secrets of Bodily Health and Vigor"" is a guidebook written by Ralph Waldo Trine that aims to help readers achieve optimal physical health and energy. The book covers a wide range of topics related to health, including diet, exercise, sleep, stress management, and mental attitude. Trine emphasizes the importance of balance in all aspects of life, and provides practical advice on how to achieve this balance. He also draws on his own experiences and...