Dr Chris inserts a tiny medical camera up his nose and down his throat to look at how our vocal cords work. Dr Xand goes on call with an emergency ambulance team and Dr Chris takes a terrifying ride on a super-scary rollercoaster to find out how our bodies deal with fear. Meanwhile, over in accident and emergency, one patient is admitted with some serious tummy pains and another has a sore elbow after break dancing leads to broken bones! Show less