This document provides information about fitness components and principles for personal trainers to apply when designing workout programs for clients. It covers movements by joint, major muscles and bones of the body. It then discusses the FITT principle for setting goals and designing workouts, including frequency, intensity, time and type of exercise for different fitness levels. The document outlines components of a full workout, including warm up, cardiovascular training, resistance training and flexibility. It provides examples of different training programs and equipment that can be used.