It is understood that to be a personal fitness instructor, we must first research and learn the knowledge of medicine and nutrition. Studying medicine is to understand the condition of human body and make different fitness programs according to different people; Learning nutrition is to provide students with nutrition recipes and dietary suggestions.

Ordinary coaches only need to complete the prescribed items during class hours, while personal fitness coaches should always track the students' fitness situation and adjust the fitness plan in time. Personal fitness instructors have a wide range of professional requirements: muscle anatomy, sports biomechanics, sports physiology, sports health care, nutrition, educational psychology and so on.