The first 2 1/2 weeks I stuck to the diet plan EXACTLY. Then last week at my work we had pretzel day, ice cream day, etc. and I did cheat here and there, but stuck to the diet otherwise.
I think it's the cardio work that has helped me lose the weight. I did weight training 3x a week before doing this program, but I wasn't getting any cardio in.
Also, although I did eat fairly healthy before starting this program, my portions were way too big and I have an extreme love for chocolate. I usually give up chocolate for Lent each year, and usually lose about 5 pounds just from not eating it! It's amazing what happens when you cut the sugar out of your diet.
So to answer your question, I think it's a combination of more cardio, following the diet plan, and especially cutting out the chocolate (or at least most of it

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