Usually I just wear a sports suit, then take a shower and change clothes after exercise and go home. It's that simple. Lockers are free. I don't know your welfare card. General membership card means that you give him the card, he gives you a key with a number on it, and you take the key number to the locker to store your personal belongings. There are also some gyms that give each member a locker, but the one I went to was given casually. As for what you said, it has always occupied a locker, and I have never heard of it. Most people take things away after exercise. Sports clothes must be washed after every exercise. Sweating too much. If you don't wash it, it is estimated that bacteria will breed in a few days.