From the actual ED point of view, having to constantly lose (or worst case scenario, maintain) is dreadful, exhausting, morbid. Doing months over months of restriction + exercise whenever the case is just simply exhausting. I say this becaus  12c8  e all these hams claim to have had an ED at some point, which I doubt, because (at least from my non-recovered point of view) I would never believe an ex-sufferer would just be fine with being even 18.5 BMI, let alone 40 or whatever. The knowledge and habits don't just simply vanish.