for me to train the entire upper or lower body in one training session is alot of work...theres no way I can pull it off and if I do.... I wouldnt be able to take each muscle group to failure and thats how I get the most growth from each muscle. I would put a rest day in between like you said and make sure you eat a TON and get lots of sleep so you dont "overtrain"

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People say to me its possible to be too big.....but for me I dont want a physique thats average something thats reachable, I want something thats unobtainable that looks like its so hard to get, yes women hate it, BUT I FUCKIN LOVE IT....SO FUCK IT!! why do I want this??? CAUSE NORMAL FUCKIN SUCKS!!!