The way the body moves, feels, breathes, and engages with the world has been viewed very differently across times and cultures. For centuries, we were believed to be composed of souls that were part of the body and inseparable from it. Now we exist in our heads, and our bodies have become the vessels for that uncertain and elusive thing we call our true selves. The way we understand the material structure of the body has also changed radically over the centuries. From the bones to the skin, from the senses to the organs of sexual reproduction, every part of the body has an ever-changing history, dependent on time, culture, and place. Fay Bound Alberti is a Wellcome Trust Senior Research Fellow and Senior Research Fellow in History at Queen Mary University of London.