Its essential to our bodies that we
exercise to maintain our cardiovascular health, first
and foremost. There are other reasons to
exercise, great reasons, but simply to exercise thinking "Oh, I'll lose weight" should be erased from your mind. Do it to feel better, not to get into a smaller size pair of jeans.
Anyway, what I recommend you eat is some form of protein, and some form of complex carb prior to exercising, about 1/2 hour before your workout or walk...