If you exercise the calories off, they're exercised off. I just don't understand WHY time of day makes a difference. *shrug*
I believe this is because your metabolism slows down tremendously while you sleep and the calories convert to fat rather than being burned. I understand though where your coming from since I've never accepted the idea that someone was fat because they had metabolism problems. Fat is unburned calories, so to lose fat either eat less or exercise more or do both.