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 an important 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, Dr. Kieran Murphy and Anya Murphy ...