Well the simple answer for this question for me is that there is no such thing as too much free food
However, reading the thread it's clear that the temptation for those of you who are connecting in business class is very real, I'm sure I'd be one of those having 3 or 4 breakfasts in that senario and my waitline would suffer!
I'm a Y flyer, always from London so difficult to overdo it really. Yes I have two lunches if flying on an early afternoon long haul but then I don't have dinner until after midnight UK time so it seems reasonable!