Be careful about LISTENING to your body. That works for people who are metabolically 'normal,' but it's been pointed out that anyone with serious weight issues (I was morbidly obese most of my life) cannot rely on this, as our body signals are screwed up.
For example, having lost close to 200 lbs, my body wants to add weight--and is constantly sending me signals to eat more. I am not underweight nor am I losing weight, so I don't need to eat more. It's just that my dysfunctional metabolic system perceives the weight loss as a negative and wants to re-fill those empty fat cells.
Just a caveat for others who may be in similar situations.
Pre-Challenge Weight: 219.5
My Journal http://www.marksdailyapple.com/forum/thread37214.html