For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
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
Your thumb is about the same size as your nose.
124
One human hair can support 3 ounces.
191