Fitness instructors need to master professional theoretical knowledge and equipment practice skills. Professional theoretical knowledge includes sports anatomy, sports biomechanics, sports nutrition, sports physiology, sports psychology, health and fitness, fitness industry laws and regulations, fitness coaches' professional ethics, etc. Practical skills of instruments include resistance training, aerobic exercise, anaerobic exercise, physical training, stretching exercise and so on.

In addition, fitness instructors also need to have certain communication skills, service capabilities and sales capabilities.