On average a woman has 4 sexual partners in her lifetime.
-143
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
Playing Tetris after a traumatic event can prevent the development of traumatic memories and reduce the chance of having flashbacks.
29
In one day, adult lungs move about 10,000 litres of air.
11
Having sex can make a woman look younger and more attractive due to the release of estrogen and collagen.
346
The oldest stone tools found are dated from 2.7 - 2.9 million years ago. The species that made these tools is unknown.
13
The human brain is more active during sleep than during the day.
28