"FITNESS CARE TRAINERS WORKOUTS. A fitness trainer motivates and coaches people to improve their physical fitness through training techniques and skills. The five components of physical fitness are cardiovascular endurance, muscular strength, muscular endurance, flexibility and body composition, according to Fit Day. Endurance (Aerobic), Flexibility, and Strength. Each of these components has specific guidelines, which govern their effectiveness. Make sure your routine includes aerobic fitness, strength training, core exercises, balance training, and flexibility and stretching."