On average, there's 100 billion neurons in the human brain.
83
The human eye blinks an average of 4,200,000 times a year.
233
You can't tickle yourself.
29
If your DNA was stretched out it would reach to the moon 6,000 times.
256
On average a woman has 4 sexual partners in her lifetime.
-143
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
Only humans shed emotional tears.
331
Crying literally alleviates stress and uniquely allows humans to decrease feelings of anger and sadness.
24