Human facts

1. It is impossible to lick your elbow.

2. If you could stretch out all of a human’s blood vessels, they would be about 60,000 miles long.

3. Like fingerprints, everyone’s tongue print is different.

4. A person can live without food for about a month, but only about a week without water.

5. On average, half of all false teeth have some form of radioactivity.