The book "Medical Gymnastics, or a Treatise on the Power of Exercise in Connection with Animal Economy; and its Great Necessity in the Treatment of Several Diseases" by Fuller Francis is an outstanding source of knowledge about the effects of exercise on the human body. In this book, the author considers the importance of physical activity in maintaining health and treating diseases. He investigates the impact of movement on the psychophysiological state of a person, arguing the need for regular physical activity to maintain the optimal functioning of the body. This book is a valuable source of knowledge both for specialists in the field of medicine and for a wide range of readers who are interested in issues of health and an active lifestyle.