Have you ever wondered just what happens when you flush a toilet, or what goes on inside a light bulb? Do you want to know how a digger scoops up soil, why boats float and what keeps planes up in the air? Lift the flaps to see inside how things work--from everyday inventions to massive machines

Fabulous flap book that reveals the inner workings of the human body. Follow your food as it travels through your body. Take a deep breath and explore your lungs. Let your mind boggle at what your brain can do. This exciting book, packed with lively illustrations and fascinating flaps, is bursting to reveal your body's amazing secrets.