Question of the day.

Can someone please explain to me how celebrities stay so skinny? I mean I guess with the personal trainer and chef that are pretty set. Along with the hectic schedules, they probably don't have time to veg out either and snack. But... they do eat... they go out..they get stressed and pms like the rest of us... they have their wine vices too, surely. They can't ALL have eating disorders?! Someone, anyone, clue me in. Even chef Betheny eats meat for pete's sake and I don't even do that, sheesh!