You can't generalize, but most of them are not good. Some gyms have personal tutors who can sleep with you when you buy classes. It's terrible. If you think you can accept it, you can be a boyfriend, and many of them can be gigolo. You still have to see him more. There are also good ones. You have to judge for yourself. After all, social relations are complicated. Even if you know his girlfriend, you should accept him to let other girls exercise. He is a one-on-one tutor. If you are a dreamer, don't worry. After all, it is somebody else's career, the ability to make money. What I see in the gym, especially those who have worked in the gym for a long time, are all battle-hardened. You think he's after you. In fact, this is just his sales method. You just don't buy it, just take your time. What if he is a good man, but he is really one in a million? Good luck.