The human eye blinks an average of 4,200,000 times a year.
233
It took 200,000 years for humans to reach 3 billion in number. It took 40 years for the next 3 billion.
11
The largest cell in the human body is the female egg and the smallest is the male sperm.
682
Playing Tetris after a traumatic event can prevent the development of traumatic memories and reduce the chance of having flashbacks.
29
The human body contains over a billion miles of DNA.
147
Unconsciousness will occur after 8-10 seconds after loss of blood supply to the brain.
93
Having sex can make a woman look younger and more attractive due to the release of estrogen and collagen.
346
It takes twice as long to lose new muscle if you stop working out than it did to gain it.
127