The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
199
The human brain doesn't stop developing until about 25 years old.
102
There are about 1,400 different species of bacteria in your belly button.
10
Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
92
The average sperm cell swims at 8 inches per hour.
76
Your body is creating and killing about 2.4 million red blood cells per second.
17