What happens to your lunch? Why do you need bones? What is your brain actually doing up there? This Usborne favorite answers the questions curious kids fire off in the bath, with over 50 flaps to lift, including flaps hiding under other flaps, and one memorable peek inside a lavatory cubicle that reliably gets the biggest laugh of the book.

Louie Stowell's text keeps the facts real but bite sized, and Kate Leake's cheerful illustrations fill every spread of this sturdy board book with things to find: brains and blood, breathing and eating, senses and skin. It is the kind of book that gets opened flat on the floor and studied.

Part of the much loved Look Inside series, it makes an easy gift for the five and up crowd: doctors in training, question askers and anyone who just discovered they have a skeleton.