From why we get a runny nose to bacteria inside us outnumbering cells, we count 15 facts about our own bodies we never even knew <br /> <br />10. Heart Pumping <br />09. Sleep in Eyes <br />08. Stomach <br />07. Runny Nose <br />06. Skin <br />05. Muscle Soreness <br />04. Gaining Weight <br />03. Gut Bacteria <br />02. Body Heat <br />01. Five Senses
