Yep, and when I'm outside in the middle of the day(in other words, the HEAT is a big factor in that, too) for an hour, it makes thing worse. I know it's making me healthier, physically, but at the same time, I would like to maintain my weight, and not lose so much that I lose my figure (hey, I'm a girl. what do you expect?).
I've thought about carrying a bottle of Gatorade with me when I'm outside in the heat (it's supposed to get worse in the summer, with all the concrete).