In fact, fitness can be divided into two types, one is free fitness and the other is cost-effective. In fact, you can choose both, just for different types of people.
For example, teenagers, who don't make money themselves, live in school, are still young and depend on their parents for their financial resources, so they need free fitness methods, such as running on the playground, playing badminton, kicking shuttlecock and skipping rope. As long as they have enough time, they can exercise, and they will gradually find themselves healthier in the long run.
For example, young people, who have started working and have their own financial resources, can choose to spend money to sign up for a gym, because everyone knows that long-term work is very tiring and needs a strong body. However, once more people have a rest time, they will choose to stay at home and enjoy their leisure time, and gradually find that they have no time to exercise. After the hard work, many problems appeared one after another, and my health became very poor. So we need to arrange a fixed gym to urge ourselves to exercise and make excuses for our laziness. Another personal point of view is that it cost money after all. If I don't go to the gym, I think my money will be wasted. It is a kind of urging behavior.
Then now I am a college student, and my fitness choice is running on the playground, which costs nothing. Running is not a few laps at once, but a little more. On the first day, I will choose jogging twice and walking slowly, which can not only exercise, but also make me too tired, so choosing the right fitness method will make you have a healthy body. Now use your spare time to start fitness.