1) Like fingerprints, everyone has a unique tongue print;
2) Humans shed about 600,000 particles of skin an hour, which works out to around 105 pounds of skin by the age of 70;
3) There are 60,000 miles of blood vessels in the human body;
4) The average person produces about 25,000 quarts of saliva in a lifetime — or enough to fill two swimming pools!
(Published October 23, 2014)