Operation Ouch!: Episode 3

With the help of opera singer Lucy O'Bryne, doctors Chris and Dr Xand van Tulleken reveal the hidden muscle that makes people breathe. Dr Xand heads to a DNA laboratory to solve the mystery of who stole his strawberry milk, and there's a chance to play along at home with another mind-bending trick. Meanwhile, the 'Ouch Mobile' is open for business, and over in Accident & Emergency one patient has cut their eyebrow, and another has stapled his own finger