The most common is card transfer, which generally charges 30% credit card handling fee. Secondly, there is a handling fee for stopping the card. If you have the energy, you can make all kinds of complaints and the gym will give you a refund.
There are no more than two reasons for card withdrawal, 1, one's own reasons and the other's (gym) reasons. The profit model of the gym is prepaid, that is, you are charged a certain fee before you spend, and then you pay before you spend. This model is definitely harmful to consumers. The simplest thing is that you are not satisfied with the service or professional ability of the other party or other things during the use, and you want to cancel the contract unilaterally and return the card. In fact, it is really difficult to return the card in the gym.