Because I have SAD, I transfer from Atkins to CAD in the winter. CAD allows a reward meal once a day. When you have the reward meal, however, the meal must be over within 60 minutes. Otherwise your body chemistry starts reacting to the increased carbs in your system. Too, the carb meal does throw you out of ketosis so after coming out of CAD in the spring I have to go back to induction.

You might want to think of keeping your "cheat" to one meal a day for one hour only when you take the time off. That way you'll do the least damage to your metabolism.