I have noticed the same thing. I have a serious coffee habit, and I've been drinking it black, eating whole grain bread, and fruit and I've noticed the same thing. The only time I seem to have a problem is the stereotypical week or so of PMS. I've been saying, I'm really surprised how easy the food part of this is going for me so far. I can definitely tell I'm not getting the crashes I used to a month ago. I'm also cooking all my own foods that I'm not eating raw instead of relying on all the processed diet crap, and I just feel healthier. Its making is really easy to stick to this change. Now, if only I could wean the boyfriend off of Mt. Dew....