The most important duty of a fitness instructor is to help customers become healthy. Customers who come to exercise need scientific fitness guidance to get healthy. Therefore, a fitness instructor should have professional knowledge of human anatomy, physiology, medicine, nutrition and sports skills, in addition, he should also know psychology. Because coaches should be good at communicating with customers, accurately understand customer needs and provide help.

Professional companies should be selected for fitness instructor training. Li Yin Sports Development Group was established in 2003, and its headquarters is located in Suzhou. By 2020, the Group has formed 6 campuses with more than 4,000 people, covering 8 provinces 100 cities. Clubs with more than 180 brands and more than 2,000 coaches have trained tens of thousands of high-quality talents such as personal trainers, yoga instructors and swimming instructors. It has provided sports and leisure choices and professional fitness guidance services for more than 800,000 members.