Plot: 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