Babies are born without kneecaps. They don't appear until the child reaches 2 to 6 years of age. |
It's impossible to sneeze with your eyes open. |
Our eyes are always the same size from birth, but our nose and ears never stop growing. |
Women blink nearly twice as much as men. |
Your stomach has to produce a new layer of mucus every two weeks; otherwise it will digest itself. |
It is impossible to lick your elbow. |
If you sneeze too hard, you can fracture a rib. |
If you try to suppress a sneeze, you can rupture a blood vessel in your head or neck and die. |
If you keep your eyes open by force while sneezing, they can pop out. |
Like fingerprints, everyone's tongue print is different. |
Ingrown toenails are hereditary. |