that red bull, man. well, i don't know about you, but the energy drinks really, really mess with me. you know that one, "rock star"? a few years ago when i was teaching my students (freshmen) were drinking it all the time, partly because it was in all the vending machines. so i drank it too for a while, because in spite of being nearly twice their age i'm not any smarter. it made me incredibly wired and then incredibly exhausted.