On an absolutely unrelated note, I ran across this from last summer and thought I would share it.
2. Intense exercise in men is linked to a decrease in appetite, and the investigators wanted to see if this could be confirmed in women. What they found was that high-intensity exercise was associated with an increased energy intake at a meal two hours later. This effect, in fact, corresponds to our natural expectations - more exercise equates with increased appetite.
Apart from demonstrating (once again) that women are different from men, the findings show that, at least for women, low intensity exercise has a similar, or better, effect on energy balance than high-intensity exercise. Whether you think that's important or not, it's clear that any form of exercise is better than none.
I got this from the website http://gendertraining.com/ There is more there that I liked, as well.