It depends on which gym you join, yesno. The best advice is to visit the gym and look at the folks who are working out. If everyone is a well-toned workout bunny, you're likely to encounter the sorts of things you fear. If, however, you see a room full of out-of-shape slobs (not judging!), you probably won't have too many problems. My gym is definitely the second type and the folks who work there are nice and don't try to pressure you.