It's a habit thing, at least for me. If I eat litle for a prolonged time eventually I will feel full whenever I eat a normal amount. Same go's for me in the ot

It's a habit thing, at least for me. If I eat litle for a prolonged time eventually I will feel full whenever I eat a normal amount. Same go's for me in the other direction. However I agree with you to some extent. Once you have been fat once the time to get used to larger food amounts is significantly reduced.