I know this has been talked about on this message board before, but I am drinking Red Bull and Rockstar by the gallon. Is my heart going to explode? Serioulsy, is this dangours? I have been very busy, and not sleep much. I drink one can of Red Bull in the morning and a 24 oz (the size of 3 red bulls) rock star in the afteroon. I always go with sugar free to try to minimize the damage, but it's still a lot of caffeinee.