Hypertension

I'm currently studying for getting into medical school. I would be more than thrilled if I could get in. I've tried now two times but third time lucky, right? :D I'm on a preparation course in Helsinki and so far so good. Biology seems easier at this point, which is good, since it wasn't my strongest subject last year. At the moment I think I'm having hypertension of these calculations which I'm doing, and regarding to that here is a link from YouTube, which I find kind of useful. Check it out!