Originally Posted by BigJosh
Do the program as writen. If you want to do "core" work, do it on weight lifting days, after your session. Do cardio whenever, days off, after your weight training session, whatever.
Excellent point. Cardio can be done whenever. I would prefer to do it on a lifting day AFTER the weight training. The thing to remember though is focus on the main lifts (squats, deads, presses, bench presses, etc.). If those start to stall out, make sure you're getting enough food and rest. The second thing to check is the assistance exercises and cardio. Cutting back on those, if necessary, may help prolong your progression.