For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
Every human spent about half an hour as a single cell.
144
The human eye blinks an average of 4,200,000 times a year.
233
A human being loses an average of 40 to 100 strands of hair a day.
133
By weight, Bone is five times stronger than steel.
417
Having sex can make a woman look younger and more attractive due to the release of estrogen and collagen.
346
You forget 90% of your dreams.
256