By weight, Bone is five times stronger than steel.
417
It takes about 20 seconds for a red blood cell to circle the whole body.
102
We share 70% of our DNA with a slug.
218
You forget 90% of your dreams.
256
It has been scientifically proven that stroking a cat can lower one's blood pressure!
456
Unconsciousness will occur after 8-10 seconds after loss of blood supply to the brain.
93
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515