Personal exercise, such as square running or other forms of exercise, is cost-free and economical, but the effect may be slightly worse, because some skills and methods are boring and require strong will, consciousness and persistence.
There will be more forms of health clubs. Everyone will exercise together or have a coach to guide them, so they won't feel bored. This is the advantage of this way, but they have to do what they can according to their personal economic situation. After all, good health clubs are not cheap.
Personal exercise is also very good, which can hone your will and save money. I just keep running every day to keep my weight at a certain level. Just get used to it. Accustomed to it, I will exercise consciously when I arrive. You will still feel uncomfortable if you don't exercise after you get used to it.
In the final analysis, it still varies from person to person. The gym has the benefits of a gym, and outdoor sports also have the benefits of outdoor sports. It depends on personal circumstances. For people with good self-control, it is suggested to choose outdoor sports, which not only saves costs, but also makes the outdoor air better than the gym.