- Though it makes up only 2 percent of our total body weight, the brain demands 20 percent of the body's oxygen and calories.
- Three-hundred-million cells die in the human body every minute.
- When recognizing someone's face, you use the right side of your brain.
- When you blush, your stomach lining also reddens.
- A woman's heart beats faster than a man's.
- Your stomach cells secrete hydrochloric acid, a corrosive compound used to treat metals in the industrial world.
- Human thigh bones are stronger than concrete.
- 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.
- You can�t kill yourself by holding your breath.
- More people are allergic to cow�s milk than any other food.
- Your heart beats over 100,000 times a day!
- In the late 19th century, millions of human mummies were used as fuel for locomotives in Egypt where wood and coal was scarce, but mummies were plentiful.
- Right handed people live, on average, nine years longer than left-handed people.
- Your ribs move about 5 million times a year, every time you breathe!
- Most dust particles in your house are made from dead skin!
- The human population is predicted to become 15 billion by 2080.
- The only time the human population declined was in the years following 1347, the start of the epidemic of the plague �Black Death� in Europe.
- A man named Charles Osborne had the hiccups for 69 years!
- An individual blood cell takes about 60 seconds to make a complete circuit of the body.
- It would take 1,200,000 mosquitoes, each sucking once, to completely drain the average human of blood.
- Laughing lowers levels of stress hormones and strengthens the immune system.
- Men are ten times more likely to be colour-blind than women.
- Men have on average 10% more red blood cells than women
- Nearly a quarter of all human bones can be found in the feet.
- Jaw muscles can provide about 200 pounds of force to bring the back teeth together for chewing.
- Most people blink about 25,000 times a day.
- One square inch of human skin contains 625 sweat glands.
- Red blood cells are produced in the bone marrow.
- Sexually transmitted diseases are the major cause of preventable sterility in American men and women.
- Every square inch of the human body has an average of 50 million bacteria on it.
- An individual blood cell takes about 60 seconds to make a complete circuit of the body.
- Babies are born with 300 bones, but by adulthood we have only 206 in our bodies.
- 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.
- Blonde beards grow faster than darker beards.
- Blondes have more hair than dark-haired people.
- By age sixty, most people have lost half of their taste buds.
- Estragon protects against heart disease.
- Every human spent about half an hour as a single cell.
- Every person has a unique tongue print.
- The body's largest internal organ is the small intestine at an average length of 20 feet
- The brain is soft and gelatinous - its consistency is something between jelly and cooked pasta.
- The brain uses more than 25% of the oxygen used by the human body.
- The human body contains about sixty thousand miles of blood vessels.
- The human body has over 600 muscles, 40% of the body's weight.
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