The human sigh acts as a physiological reset button.
23
On average a woman has 4 sexual partners in her lifetime.
-143
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
A person will create enough saliva to fill two average size swimming pools during his lifetime.
191
You can't tickle yourself.
29
Crying literally alleviates stress and uniquely allows humans to decrease feelings of anger and sadness.
24
One human hair can support 3 ounces.
191