The Book of Gross Body Facts

The human body is an amazing and complex
machine. It is made up of trillions and trillions
of cells, which form the blood, bones and
organs that allow you to experience and enjoy
the world around you. Even when the body is
harmed by accident, illness or neglect, it has
clever ways of fixing itself. Sometimes,
however, the body needs to be gross to make
it all better.