I too was eating a lot more than usual, even though I used their website to design a 1600 calorie a day diet. To meet all the dietary goals I tended to exceed 1600 calories handily.
Strangely, I had trouble with grains and dairy most of all. I thought my bete noir would be the vegetables, since I usually don't get enough of those. I got plenty of veggies this week, but struggled to get the others.
Overall, I had trouble hitting the serving goals. I'd always be off on at least one category per day -- usually under. It was an interesting experiment, and I had fun with it, but I think I do better with keeping just the food diary, rather than trying to be so regimented every day. I spent a little more time than I thought was healthy thinking about my meals.