The fourth edition of this book is designed to introduce students to the many areas of study and possible professions in the field of exercise science, whether in an academic setting, at a fitness or sport venue, or in an organization such as the Centers for Disease Control & Prevention. Readers who plan to pursue careers in fields such as exercise physiology, athletic training, nutrition, strength and conditioning, or exercise/sport psychology will find coverage of the major areas of study in exercise science. Each chapter was written by one or more expert in that particular field. The book as a whole offers an excellent balance of theory, research, and application.