10 Things You Didn't Know About You + What's the Maximum Weight A Human can Lift

10: Your Stomach Secretes Corrosive AcidThere's one dangerous liquid no airport security can confiscate from you: It's in your gut. Your stomach cells secrete hydrochloric acid, a corrosive compound used to treat metals in the industrial world. It can pickle steel, but mucous lining the stomach wall keeps this poisonous liquid safely in the digestive system, breaking down lunch.9: Body Position