Well, like Arimeh said, as long as you don't do it all the time... the thing with eating is that when you over eat it stretches your stomach (you know that) and if you do it too often you'll suffer a weight problem. My usual limit with pizza is 3 pieces... but I occassionally can do more if the crust is very thin and the topping minimal. I can't stomach too much bread or bulk... i'm also a grazer... I haven't eaten a "meal" today for example... just little snacks here and there... nibbled on a bit of lettuce and sliced chicken when making sandwiches for the boys lunch... had a few crackers... had a wedge of camembert... um, what else... 2 coffees.... a handful of Cheerios (a treat which we usually don't buy... I classify them as junk food... DH was weak when he did the shopping with my 5yo last week). Anyhow... I have never dieted but I basically make sure i don't stretch my stomach capacity very often... maybe once every few months... though having said that I'm cold ATM which is often a reason for overeating with me!