For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
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
In one day, adult lungs move about 10,000 litres of air.
11
A human being loses an average of 40 to 100 strands of hair a day.
133
Having sex can make a woman look younger and more attractive due to the release of estrogen and collagen.
346
It takes approximately 12 hours for food to entirely digest.
93
Playing Tetris after a traumatic event can prevent the development of traumatic memories and reduce the chance of having flashbacks.
29
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89