If hes getting great results on the routine, able to get out of the gym faster, and not tearing himself apart, to the point of injuries, sounds like its working great for him. For me, 45 mins is just the beginning of most of my sessions, and its after that period that I hit most of my PR's. Of course, my rest periods are often much longer then most on the compound lifts especially. Im just now finally, trying to look into more methods to see what else is out there. Im putting a ton of stress on my body and mind training at the rate I have been. I may need to look for alternatives in my training at some point. My gains are the best theyve ever been now though. But Ive got pain all over. Im actually doing a 3 day training routine at the moment. Im still able to hit PR's on flat bench training 3 days a week. Some weeks it might only be 2 days. Id rather train like this then be out of the gym for a long stretch. Im basically just training arms,chest and back when I can. My legs and back seem to maintain longer, then anything else. I lose muscle faster on everything else. I figure I can try to bring up my bench and arms in the mean time. Might have to cut the routine down even more if my back keeps getting worse. Good luck with the routine!