No one likes vomit. It smells, it gets everywhere, and it means someone definitely isn't feeling well. Hidden in all that grossness is a human necessity: if a body is throwing up, it needs to get something out, and fast. This book looks at the how and why of vomit, taking readers through the reasons people spew and what to do when it feels like they need to hurl. With full-color photographs and graphics illustrating the science behind the gross, this book will wow readers who are curious about bodily functions.