Tried both using different variables (empty stomach, half can tuna, full) for different times leaning out.
I prefer the results I get from PWO cardio by far. Seems to be more effective. I was forced to do it this way due to my schedule, and I'm happy I do, because no way in hell am I waking up at midnight to get my cardio in! (I wake up at 2:30am as it is).