The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
The human eye blinks an average of 4,200,000 times a year.
233
Only humans shed emotional tears.
331
Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
92
In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
198
If the human eye was a digital camera, it would have 576 megapixels.
25
Playing Tetris after a traumatic event can prevent the development of traumatic memories and reduce the chance of having flashbacks.
29
Your heart will pump about 212 million liters in its lifetime.
26