By weight, Bone is five times stronger than steel.
417
Your wounds heal faster if you lick them, you instinctively do this for that reason. Tears help, too.
20
Every year your body replaces 98% of your atoms.
119
Having sex can make a woman look younger and more attractive due to the release of estrogen and collagen.
346
Your skeleton keeps growing until you are about 35, then you start to shrink.
74
Fingernails grow nearly 4 times faster than toenails.
31
On average, someone in the US suffers a stroke every 40 seconds; someone dies every 3 minutes from stroke.
57