The digestive system is the series of tubelike organs that convert our meals into body fuel. There are about 30 feet (9 meters) of these convoluted pipeworks, starting with the mouth and ending ...

NARRATORWell I hope you're feeling gutsy right now because you are about to go on an incredible and disgusting journey right through the digestive system of someone who has swallowed a camera.

Narrator: Why do we eat food? I mean, really, wouldn't life be far simpler if we didn't have to? Well the thing is we need energy to keep on living. Each part of our body needs to be recharged ...