Ok, this is totally had nothing to do with perv stuff or ecchi or whatever is dirty everything is science ok! but I just want to ask why do people (man or woman) every time they feel arouse their hearts beat fast? For man of course when they feel arouse their blood pump in to the air spaces in their banana but why does this affect the heart? (Sawa ask this because Sawa is an idiot)
fight or flight reponse the more blood is circulating the more prepared you are for what to come, faster movements, faster decision making, increased senses, bankai released, instant teleport
Brain: [Aroused] sends information to Heart to do something about it. Heart: [Excited] sends blood to Penis to increase hardening. Penis: [Aroused] intakes more blood and increases hardening due to arousal. Now students, we see here that Heart is the middleman in this relationship.
Guess it's because the body is working out even if we don't notice it that clear and also for the emotions of the moment, from which derives the high blood flow