collection of 13 unusual facts about the human body that everyone should know but don't. Some of them surprising, others are obvious upon thinking about them. Hope you enjoy.
1. Human thigh bones are stronger than concrete.
2. Your heart beats over 100,000 times a day!
3. The average human body contains enough: iron to make a 3 inch nail, sulfur to kill all fleas on an average dog, carbon to make 900 pencils, potassium to fire a toy cannon, fat to make 7 bars of soap, phosphorous to make 2,200 match heads, and water to fill a ten-gallon tank.
4. Women blink nearly twice as much as men.
5. Laughing lowers levels of stress hormones and strengthens the immune system. Six-year-olds laugh an average of 300 times a day. Adults only laugh 15 to 100 times a day.
6. An individual blood cell takes about 60 seconds to make a complete circuit of the body.
7. One quarter of the bones in your body, are in your feet!
8. Beards are the fastest growing hairs on the human body. If the average man never trimmed his beard, it would grow to nearly 30 feet long in his lifetime.
9. It is impossible to sneeze with your eyes open.
10. A person will die from total lack of sleep sooner than from starvation. Death will occur about 10 days without sleep, while starvation takes a few weeks.
11. You can’t kill yourself by holding your breath.
12. Right handed people live, on average, nine years longer than left-handed people.
13. The present population of 6 billion plus people of the world is predicted to become 15 billion by 2080
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