Exercise physiology is the science of how the body responds and adapts to exercise. It studies both acute and chronic exercise responses across various systems like cardiovascular, endocrine, and musculoskeletal systems. Exercise physiologists work in areas like fitness, rehabilitation, research, and sports to help improve health, performance, and recovery through customized exercise programs. Developing a coaching philosophy outlines one's beliefs regarding the coach's role, athletes' responsibility, importance of competition versus development, and adherence to rules of fair play.