Try and keep your lidting sessions to under an hour a piece. Longer than that and you actually do more harm than good by taking energy away from you that bshould be used to build your body back up.
BTW, Arnold's Encyclopedia is VERY old and there have been a lot of advances in natural body building philosophy since then. Remember, when Arnold was doing that workout he was taking enough Roids to kill a horse. He didn't need to rest himself or give his body time to rebuild. You will (unless you're juicing that is
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