By weight, Bone is five times stronger than steel.
417
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
On average a woman has 4 sexual partners in her lifetime.
-143
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
Enamel is hardest substance in the human body.
61
Humans are capable of running 40 mph according to a study by bio-mechanical expert Dr. Matthew Bundle. Today's fastest man, Usain Bolt, has a top speed of 28 mph.
34
You can't tickle yourself.
29
The average person will go on a date at least 100 times before they finally marry.
33