For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
Human hair and fingernails continue to grow after death.
7
By weight, Bone is five times stronger than steel.
417
Only 12,000 years ago there was a species closely related to modern humans called Homo floresiensis that had been living on an Indonesian Island. They used fire and rather advanced tools, yet were only about 3 feet tall and weighed around 25kg.
15
Stress can result in more headaches as a result of the body rerouting blood flow to other parts of the body.
92
It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
In one day, adult lungs move about 10,000 litres of air.
11
