Join the doctors for a journey around the human body as they look at their favourite bits from your head to your toes. First stop is the head and mega-gross alerts are in store for this gash! Next stop is a special muscle that controls light coming into your eye and helps you go for a poo! Then it’s the heart - find out what a fast formula one car has to do with it, and see why washing your hands after you go to the loo is so important. And we catch up with our four Ouch Patients for the last time.