I’m not one of those literalists who demands practical, reasonable answers for everything he sees in a film, but how exactly does a vampire attain stiffitude? Don’t you need warm blood rushing to the loins, etc.? I’m not arguing with the notion of Edward and Bella doing it — it’s fine, and thank God the series is almost over — but did Stephanie Meyer ever try to explain how Edward manages the act? Not criticizing — just asking.