-Men without hair on their chests are more likely to get cirrhosis of the liver than men with hair.
-At the moment of conception, you spent about half an hour as a single cell.
-There are about one trillion bacteria on each of your feet.
-Your body gives off enough heat in 30 minutes to bring half a gallon of water to a boil.
-The enamel in your teeth is the hardest substance in your body.
-Your teeth start growing 6 months before you are born.
-When you are looking at someone you love, your pupils dilate,
and they do the same when you are looking at someone you hate.
-Your thumb is the same length of your nose.
At this very moment I know well you are putting this last fact to the test...
...now remove your thumb from your nose and pass this on to the friends you think might be interested in comparing their thumbs to their noses as well. :)