In "The Science of Being Well", Wattles argues that the key to good health is the proper functioning of the body's cells. He asserts that the cells of the body require a steady flow of vital energy in order to function properly and maintain health. He goes on to explain that this vital energy is obtained through proper nutrition, exercise, and a positive mental attitude.Wattles emphasizes the importance of positive thinking and visualization in achieving good health. He encourages readers to focus on what they want, rather than what they do not want, and to visualize themselves as already possessing good health. He also advocates for the use of affirmations to reinforce positive beliefs and attitudes.Throughout the book, Wattles stresses the interconnectedness of the mind and body, and the importance of taking a holistic approach to health. He argues that true health is not simply the absence of disease or illness, but a state of vitality and well-being that encompasses all aspects of life.Overall, "The Science of Being Well" is a timeless classic in the field of self-help and personal development. Its teachings continue to inspire and motivate readers to this day, offering practical advice and insights for achieving optimal health and well-being.