A person will create enough saliva to fill two average size swimming pools during his lifetime.
191
An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
It takes about 20 seconds for a red blood cell to circle the whole body.
102
Crying literally alleviates stress and uniquely allows humans to decrease feelings of anger and sadness.
24
Your heart will pump about 212 million liters in its lifetime.
26
The average sperm cell swims at 8 inches per hour.
4
Only humans shed emotional tears.
331