If every muscle in your body could pull in one direction, you could lift nearly 25 tons.
12
The human brain doesn't stop developing until about 25 years old.
102
Your thumb is about the same size as your nose.
124
In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
199
Within three days of death, the enzymes that once digested your food begin to eat you.
22
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
Our eyes are always the same size from birth, but our nose and ears never stop growing.
269
A person can live without food for about a month, but only about a week without water.
156