Book excerpt: Exercise Prescription Case Studies for Special Populations introduces readers to situations they are likely to encounter when writing exercise prescriptions in professional settings. The book helps students create exercise prescriptions for individuals with chronic diseases, including diabetes, hypertension, dyslipidemia, obesity, metabolic syndrome, arthritis, osteoporosis, fibromyalgia, and more. Opening chapters focus on pre-exercise screenings, evaluation, and principles of exercise testing and prescription. Overviews of various diseases and special considerations are presented. Finally, case studies demonstrate the continuum of information from screenings to writing exercise prescriptions for clients with chronic diseases. The revised first edition has been updated to align with American College of Sports Medicine (ACSM) guidelines, specifically those relating the cutoff guidelines for risk factors such as cholesterol, high blood pressure, etc. The names of tests and exercise prescription lengths have been adjusted accordingly. Exercise Prescription Case Studies for Special Populations is an exemplary textbook for courses in exercise science and physiology. It is also a valuable resource to help students prepare for the ACSM Certified Clinical Exercise Physiologist exam.