There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
You can't tickle yourself.
29
The human sigh acts as a physiological reset button.
23
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
By weight, Bone is five times stronger than steel.
417
Obsessive nose picking is called Rhinotillexomania.
101