It would take about 1,200,000 mosquitoes to fully drain the average human body of blood.
217
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266
Your body is creating and killing about 2.4 million red blood cells per second.
17
There are about 1,400 different species of bacteria in your belly button.
10
Within three days of death, the enzymes that once digested your food begin to eat you.
22
Your heart will pump about 212 million liters in its lifetime.
26
In 1996, research found that having excessive body hair is linked to higher intelligence.
23