Yawns are more contagious among people with closer relationships.
163
Playing Tetris after a traumatic event can prevent the development of traumatic memories and reduce the chance of having flashbacks.
29
On average a woman has 4 sexual partners in her lifetime.
-143
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
31
The human brain is more active during sleep than during the day.
28
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