Having sex can make a woman look younger and more attractive due to the release of estrogen and collagen.
346
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
Enamel is hardest substance in the human body.
61
Your heart will pump about 212 million liters in its lifetime.
26
Your thumb is about the same size as your nose.
124
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.
35
The human brain uses approximately as much energy as a 10 watt light bulb.
120
