In recent years, the Chinese government has further increased its investment in gymnasium construction to better meet people's rapidly growing demand for fitness. In addition to building new gyms, measures, such as transforming old factories and commercial buildings into gyms, have also been taken in many cities to increase the number of local gyms. Thanks to the government's grant, more and more gyms are open to the public free of charge or for a small fee. Many gyms have greatly improved their service quality by applying modern information technology. People can conveniently book venues and pay for them online. It can be predicted that with the continuous improvement of sports facilities, more and more people will go to gyms to build up their bodies.