| 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. |
