Literally, I think this sentence has two meanings. The first one makes you think that going to the gym can improve yourself, right? After you become handsome, there may be many girls to see you. He is afraid that others will look at you, so he told you not to be unusually handsome. One is to like your performance, and the other is a kind of ridicule from friends, which means that when you become so handsome, there are too many people around you.