The human eye blinks an average of 4,200,000 times a year.
233
Playing Tetris after a traumatic event can prevent the development of traumatic memories and reduce the chance of having flashbacks.
29
You forget 90% of your dreams.
256
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
The human sigh acts as a physiological reset button.
23
When you are looking at someone you love, your pupils dilate, they do the same when you are looking at someone you hate.
1k
The human body contains over a billion miles of DNA.
147