Gonna try and make this short and sweet. I'm a 20 year old guy, and I've noticed that after lifting heavy or sprinting, my hunger afterwards is less than it would have been, had I not exercised. Basically, if I exercise BEFORE I eat, my appetite seems to be a lot smaller than normal. I find this satisfying, considering my appetite is typically that of a tyrannosaurus rex. Anybody else notice this? Anybody know the science/mechanics behind this?