The book discusses first the psychologic factors and the influence of environment and hormonal effects upon the individual person's attitude towards work and work performance. The physiologic background of muscle exercise and of training is described in some detail. An attempt is then made to relate fatigue and exhaustion to various diseases, especially those of the circulatory system. About 100 pages are devoted to prevention of fatigue and fatigue-diseases.
Most of these preventive measures are of a poorly substantiated empirical nature. The book as a whole indulges in generalities and vagueness and adds little to factual knowledge.