The second reason is that there is no time. The fast pace of modern society makes many young people breathless, but the company's career is either overtime or on the way to overtime. When they don't have to work overtime, they would rather do aerobics and yoga at home than go to a crowded gym. If the air circulation in the general gym is not good, long-term fitness in such an environment will not do any good to the body.
The last reason is the problem of the fitness instructor. Most people who like sports want professional guidance from a fitness coach. As far as the current gym specifications are concerned, it can be described as uneven. Many gyms don't even have qualified fitness instructors in order to make more money and spend less money. This kind of fitness instructor is just a way to attract the gym, especially for some white people who have just started fitness.
You don't have to choose a gym to keep fit. You can choose some outdoor aerobic exercises, such as swimming and morning running, which are all good exercises. If you have a certain economic foundation and time, then choose some more formal gyms, so as to get twice the result with half the effort.