Yeah, I thought about doing cardio for a second workout, and I'm taking it under consideration. I'm just trying to find out if I could actually benefit from the double workout, I guess that's my real question. If I can gain faster from doing a heavy workout in the morning, then getting in again in the afternoon and push myself, I'd really like to do that.
This is the start of my second week back in with a strict routine, so i'm trying to gain as fast as possible without over doing it. In the mornings I go pretty fast without too much time between sets, so i'm keeping my heart rate up, but I'm definitely worn down by the end of the 90-100 minutes.