Do you really know what is happening inside your head? James May does and it turns out there is a lot more than you would imagine.

With the aid of some mind-boggling animation and motion graphics, he cranks open your cranium to get the answers from 100 billion whizzing neurons on questions like why men don't ask for directions, why your memory is so bad and what love has in common with class A drugs.

Packed full of brain-bending science that is sure to blow your mind - you will never think of your grey matter in the same way again!