a lot. I've got a semi-popular fitness IG page (and I'm not even overly attractive, just reasonable fast, and thin) and while I get a lot of love from other fit people, and people who are out-of-shape-but-not-fat, I get a shitton of comments telling me I need to eat a cheeseburger / men won't fancy me because I don't have 'curves' etc. It gets me down a little sometimes but then I remember that I can run a 16:35 5k and they can't even walk 5k.