By weight, Bone is five times stronger than steel.
417
On average a woman has 4 sexual partners in her lifetime.
-143
An average heart beats 100,000 times a day, pumping some 2,000 gallons of blood through its chambers. Over a 70-year life span, that adds up to more than 2.5 billion heartbeats.
73
Your thumb is about the same size as your nose.
124
The world's shortest man measures only 21.5 inches.
73
One human hair can support 3 ounces.
191
The human brain uses approximately as much energy as a 10 watt light bulb.
120