Does watching a leaf fall help you process the sentence the leaf is falling down? Apparently, no, it hurts. It slows you down. Cognitive Daily reviews research supporting this conclusion. Money quote:
...people take longer to process sentences that match the movement of an animation than they do to process sentences that don't match it. Kaschak's team reasons that we must be using the same region of the brain to process the motion itself as we do to process the language describing that motion.