If you like a girl and you want her contact information, you should first observe her frequent gym activities and see if there are any friends around her. Then deliberately approach her, talk to her, ask her if she often comes to exercise, then ask her what kind of exercise she likes, and ask her if she thinks the fitness effect is obvious. Then after she answers these questions, you should tell her that you like the same sports as her. If she doesn't have any friends around her, you say no. Then say that her fitness is boring, take the opportunity to let her send a WeChat, and you can invite her to be a sparring partner in the future!
If she has friends, the previous steps remain the same. When she asks for WeChat later, you can say that you came by yourself. She is fine, with friends, it is boring to come alone. Tell her we can go together when we have a chance, then ask her where she is, just drop by, then add a WeChat, and go together when we have a chance, anyway!