And then they don't understand why that response would annoy me.
I'm not suffering from poor body image. I think I look fine. But I am suffering from poor body . . . ability? I dunno. When I got back from New Zealand, I was full of energy and could walk for hours without feeling it. (I was also skinnier than I am now, but that worries me far less. I'm just back to where I was before I left the country.) I don't do anything now, and I know that the trails that I conquered overseas would be far more difficult for me now.
I must become more active. I must eat better. I must also punch irritating people in the face.
Unfortunately, the first two options are only slightly more likely than the third.