101 facts about the human body that will surprise and amaze you.Did you know that you shed approximately six hundred thousand skin particles every hour? That yawning cools the brain? Or that the appendix plays a crucial role in gut health?The human body is a marvel — one that can grow, repair itself, and last for eighty to ninety years. In 101 Fascinating Human Body Facts, Anya Murphy and Dr. Kieran Murphy explain the functions of this extraordinar...