You don't have to worry about old and new problems. The first thing you should pay attention to is whether it is convenient to go there. For example, if the road is too far and parking is difficult, we should consider it.
You don't know its background, and its reliability is out of the question. There are roughly two aspects to pay attention to. One is whether he is a chain store, whether the brand value is high or not, whether the coaching team (introduction) is professional, and whether the fitness equipment is obviously damaged.
What about the second one? You can shop around. The activity is a bit outrageous, the discount is so big that you can't believe it, so don't go. You can experience it in a general gym. You can call once and contact the coach.
In addition, there is really no good way to run away from the gym, and safeguarding rights is very verbose. What you can do is to keep your credentials when you apply for a card in the gym.