If you unfolded your brain, it would cover an ironing board.
42
During menstruation, the sensitivity of a woman's middle finger is reduced.
47
Enamel is hardest substance in the human body.
61
35,000 people in the U.S. will die from the flu annually.
6
Fingernails grow fastest on the hand you favor.
44
A human brain produces as many as 12,000 to 50,000 thoughts per day, depending on how deep a thinker a person is.
23
Only 1 person in 2 billion will live to be 116.
49
You see your nose at all times, your brain just chooses to ignore it.
30