Only 1 in 25 People Pass This Human Body Quiz Without Googling – You In?

The human body is a bizarre and fascinating machine, full of quirks that defy everyday logic. Did you know your stomach acid is strong enough to dissolve metal, yet it doesn't eat through your own insides? Or that your skeleton renews itself every decade, making you literally a new person over time? From the fact that you produce enough saliva in a lifetime to fill two swimming pools, to the reality that your nose and ears never stop growing, our bodies are packed with weird wonders. But how much do you really know about this complex system that keeps you alive? Test your knowledge with these 40 questions covering everything from muscles and bones to senses and bodily functions. Some facts might seem too strange to be true, while others debunk common myths. Dive in and see if you can score perfectly—your body might surprise you more than you think!