lis3tt3

I found this site had a really good zig zag. http://www.freedieting.com/tools/calorie_calculator.htm

I say yes. If you stick to the same caloric intake for too long your body will plateau. Why not have a cheat day? If you're living a healthy lifestyle then this is a life-long investment and having a cupcake once a week isn't going to destroy years of effort.