There is no need to apply for a card in the gym. You can go to the gym once. It may not be cost-effective to calculate only once, because the price is more expensive every time. But it also depends on the number of times you go to the gym. If you rarely go, a single payment is more cost-effective; If you go there frequently, it is more cost-effective to get a fitness card. If you have enough time and want to achieve the effect of reducing fat and increasing muscle, it is necessary to get a fitness card. Moreover, the gym is well-equipped and has a special coach to guide the movements, which will be more efficient than practicing alone. If going to the gym is just a run, then you can do it at home. There is no need to go to the gym to get a card.