For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
Your fingernails grow faster in summer.
744
It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127
A third of the human population sneezes when they look at the Sun. Light can signal the ocular nerve near the sinuses and triggers a sneeze.
18
Due to the angle at which the optic nerve enters the brain, staring at a blue surface during sex greatly increases the intensity of orgasms.
252
Babies crawl an average of 200m a day.
212
There are times when you're walking that the pressure on your feet exceeds your body weight, and when you're running, it can be three or four times your weight.
62
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132