i know what you mean about the mac and cheese- every once in a while i may taste a carb-food,or even get a good strong whiff, and i tend to feel a strong aversion to it. i think its mostly psychological, because i know it will ruin everything. i still enjoy those atkins bars though. yum! oh- and if you're looking to work the muscles to speed up the metabolism, i'd reccomend the t-tapp excersises. i found the link from this forum, and though i've only been on it three days, i've lost another 2 lbs (which is unusual for me at this point) and i KNOW this stuff is working. its really hard to find lower-body workouts- this stuff is good.
ok- i got way off topic. but i think it will help.
here's the link

http://www.t-tapp.com/articles/womansworld/page3.asp