The old morning cardio crap...
DO NOT do your cardio in the morning on an empty stomach, at least have a protein shake beforehand (adding a piece of fruit to saturate liver glyco would be a nice idea as well). Doing cardio on empty stomach = doing cardio with no liver glycogen and when the liver is depleted of glycogen it uses muscle to saturate itself. So, no your body doesn't go straight to fat stores when on an empty stomach (how great that would be, huh?), it goes to muscle.