The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
One human hair can support 3 ounces.
191
Your body is creating and killing about 2.4 million red blood cells per second.
17
When you get goosebumps and your hair stands, the hair helps to trap air, making you feel warmer by keeping in your body heat.
46
The human body contains over a billion miles of DNA.
147
If you hold farts in during the day, they'll just come out when you sleep.
16
Within three days of death, the enzymes that once digested your food begin to eat you.
22
Our eyes are always the same size from birth, but our nose and ears never stop growing.
266