There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
Your wounds heal faster if you lick them, you instinctively do this for that reason. Tears help, too.
20
The tongue is the strongest muscle in the human body.
50
Crying literally alleviates stress and uniquely allows humans to decrease feelings of anger and sadness.
24
Cigarette smoke contains 4,800 chemicals, 69 of which cause cancer.
145
The human heart creates enough pressure to squirt blood 30 ft.
37
All humans have the ability to see ultraviolet light, but it is passively filtered out by the eye's lens. People who undergo surgery to remove the lens can detect ultraviolet light.
22
There are 206 bones in the human body!
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