In the last episode of the series, the doctors have picked out some of their favourite moments - get ready to see just how strong your tendons really are. Show more

Dr Chris and Dr Xand show how incredible the human body is. The doctors reveal the secret of the special fluid which enables your joints to withstand force. Show more

Dr Chris and Dr Xand show how incredible the human body is. The doctors reveal why you need differently shaped teeth to eat your food safely. Show more

Dr Chris and Dr Xand show how incredible the human body is. The doctors reveal how big your lungs would be if they were laid out flat. Show more

Dr Chris and Dr Xand show how incredible the human body is. The doctors take a dip in the sea to reveal how sensory neurons detect hot and cold. Show more

Dr Chris and Dr Xand show how incredible the human body is. The doctors reveal the amazing piece of body kit that helps your ears to pop. Show more

Dr Chris and Dr Xand show how incredible the human body is. The doctors investigate eyebrows and find out just how tough it is to work in the hospital pharmacy. Show more

Dr Chris and Dr Xand reveal how your brain enables you to learn new things with the help of three human 'samples', a giant pile of sand and some water! Show more

Dr Chris and Dr Xand find out why blood rushes to your head when you are upside down but doesn't rush to your feet when you're standing up! Show more

Dr Chris and Dr Xand reveal how your bones grow to make you taller, while in Operation Takeover they take on the role of midwives for the day. Show more

Dr Chris and Dr Xand reveal the type of muscles that help you see... and go for a poo! And they find out what it's like to be a hospital hairdresser. Show more

Dr Chris makes Dr Xand cry to demonstrate how your body makes different types of tears to protect your eyes in different ways. Show more

Dr Chris and Dr Xand reveal how your skull protects your brain, and they're thrown in at the deep end when they find themselves running a busy GP surgery. Show more