NSCA’s Essentials of Personal Training, Third Edition, provides guidelines for the complex process of designing safe, effective, and goal-specific resistance, aerobic, plyometric, and speed training programs for clients of all ages and fitness levels. With comprehensive coverage of various categories of unique client needs, readers will learn how to make specific modifications and adjust exercise programs for each individual client. Multiple fitness testing protocols and norms for each component of fitness—including 10 new tests—are all presented, along with instructions that are detailed yet easy to follow.