7 Amazing things your body does

While most of us experience a broken bone at some point in life, the fact is that bone is an incredibly tough substance. So strong, in fact, that, as Discover Magazine puts it, "ounce for ounce, our bones are stronger than steel." A bone has a greater pressure tolerance and bearing strength than a rod of steel of the same width. The strongest bone in the body is the femur, which can support 30 times the weight of an average human.