No Snacks, no sweets, no seconds. Except on Days that start with S. Too simple for you? Simple is why it works. Look here for questions, introductions, support, success stories.
I'm trying for the 21 Day Club, but I have a birthday coming up on a weekday. I think birthdays are s-days, so if I have birthday cake etc.... can I count this as one of my 21 days, or do I have to start over?