WHAT'S INSIDE: HUMAN BODY
- Body Parts
- Body Systems
Despite what people say, the tongue isn't your body's strongest muscle. But you do depend on it for eating, tasting and speaking.
You breathe in and out anywhere from 15 to 25 times per minute without even thinking about it -- it just happens naturally. Learn all about your lungs, various conditions and diseases, and what makes the breath of life so crucial.