When I first started atkins and of course after induction, I used to give myself days "off" from low carbing. For example, I give myself major holidays, like thankgsiving. I don't go overboard, but, I give myself permission to eat that piece of pie and not feel guilty. And sometimes I would give myself Saturdays or Sundays that I could eat anything I wanted to. In most cases, I wouldn't eat as many carbs as I planned on. Which turned out to be a good thing in proving to myself that I am not as carb addicted as I used to be. So, I totally agree with having a carb day to allow your body some fun. In most cases this won't hurt you, but just remember to get back on the wagon the next day and eat right again. Don't make exceptions everyday.
Chao, Belle