It takes about 20 seconds for a red blood cell to circle the whole body.
102
It takes 17 muscles to smile, 43 to frown.
65
The average human body contains enough iron to make a small nail.
50
Having sex can make a woman look younger and more attractive due to the release of estrogen and collagen.
346
Falling in love raises levels of nerve growth in a person's brain for about a year and can improve their memory.
39
After age 30, the brain begins to lose about 50,000 neurons per day - shrinking the brain .25% each year.
55
If every muscle in your body could pull in one direction, you could lift nearly 25 tons.
12
It is possible for you to survive even after the removal of the spleen, the stomach, one kidney, one lung, 75% of the liver, 80% of the intestines, and almost every organ from the pelvic and groin area.
218