If you are reading the first book by the Hellers that is CAD it doesn't mention about if you go back for seconds you have to balance everything, but in the CALP it does mention this. The way Im going to do it is after I balance my RM and if I want more of a certain food (probably carb) but only want a little bit, I will only get a little of the carb and a little protein and little veggies to keep it balanced. I think thats the whole idea is keeping everything balanced. Of course, Im new to all this, but Ive read both books and remember...barb