Fitness industry-the most potential industry in the future. At present, fitness instructors are equivalent to half doctors and half nutritionists, and people's lives are getting richer and richer. In addition, with the implementation of a well-off society in an all-round way and the beginning of the national fitness campaign, people pay more and more attention to health. According to authoritative data from Australia, China has grown from more than 6,000 gymnasiums to more than 30,000 today in just over three years. Demand is more and more accurate, and the fitness industry has achieved unprecedented development. The demand for fitness instructors has peaked. Many gyms are coaches who used to go to the gym to do fitness. It is conceivable that the fitness industry is indeed a high-paying industry. Personal trainer, as a kind of fitness trainer, can be imagined that its development prospect is infinite.