Operation Ouch!

Operation Ouch! celebrates its tenth birthday with a party like no other - let's just hope Dr Xand sent out all the invites. 

The Doctors do the world's biggest poo in the lab to show you how your digestive system works, and we meet a horse-riding Brilliant Body! 

The doctors reveal how your eye muscles work with an unusual fairground game.

The Doctors make Billy Bones his very own bum and reveal the power of your gluteus maximus muscle! And find out who gets snotted in Ouchology. 

The Doctors supersize the heart to investigate the brilliant body kit that makes it beat! And prepare to meet a brilliant body para-cyclist who uses brain power to cycle faster. 

There is a supersized giant nail in the lab as the Doctors show how your nails are made. But what happens if you stub your toe, don't eat enough veg, or get a fungal infection? 

The Doctors turned superheroes reveal the incredible energy stores that make your body work around the clock, and meet a super-smelling Brilliant Body who can sniff out cancer. 

The Doctors get to grips with guts when Dr Xand swallows a camera pill to show you the incredible villi inside his intestines which absorb the nutrients from food.

The Doctors investigate how enzymes speed up reactions inside your body with lots of foam! And Dr Xand explores how music affects your brain when he visits a special orchestra. 

There is a snake in the lab as Dr Chris and Dr Xand explore how our body temperature works, and new twin doctors Dan and Raph bust some urban myths about how to stay healthy. 

Britain's strongest woman, Andrea Thompson, joins the Doctors in the lab as they reveal how muscle fibres work, and we say hello to three more incredible Ouch Award finalists. 

It's milkshake time in the lab as the Doctors investigate how blood travels around your body - but will their own ideas for brilliant blood vessel machines impress the minis? 

Is Dr Xand finally allowed to eat in the lab, or are the doughnuts for an experiment? Find out as the Doctors explore blood types and try to fight off unwanted invaders in game mode.