Blood Facts

• Two million red blood cells die every second.
• There are approximately 100,000 miles of blood vessels in the human body.
• Seven percent of a humans body weight is made up of blood.
• In the early nineteenth century some advertisements claimed that riding the carousel was good for the circulation of blood.
• Each day 400 gallons of recycled blood are pumped through the kidneys.
• By donating just one pint of blood, four lives can be saved.
• Blood is such a good stain that Native Americans used it for paint.
• The kidneys filter over 400 gallons of blood each day.
• The average life span of a single red blood cell is 120 days.
• Blood accounts for about 8% of a human's body weight.
• A woman has approximately 4.5 liters of blood in her body, while men have 5.6 liters.
• Your blood takes a very long trip through your body. If you could stretch out all of a human's blood vessels, they would be about 60,000 miles long. That's enough to go around the world twice.
• Half your body’s red blood cells are replaced every seven days.
• If all the blood vessels in your body were laid end to end, they would reach about 60,000 miles.

Hair Facts

· On average, a man spends about five months of his life shaving.
· On average, a hair strand's life span is five and a half years.
· On average redheads have 90,000 hairs. People with black hair have about 110,000 hairs.
· Next to bone marrow, hair is the fastest growing tissue in the human body.
· In a lifetime, an average man will shave 20,000 times.
· Humans have about the same number of hair follicles as a chimpanzee has.
· Hair will fall out faster on a person that is on a crash diet.
· The average human head weighs about eight pounds.
· The reason why some people get a cowlick is because the growth of their hair is in a spiral pattern, which causes the hair to either stand straight up, or goes to a certain angle.
· The reason why hair turns gray as we age is because the pigment cells in the hair follicle start to die, which is responsible for producing "melanin" which gives the hair colour.
· The big toe is the foot reflexology pressure point for the head.
· The loss of eyelashes is referred to as madarosis.
· The longest human beard on record is 17.5 feet, held by Hans N. Langseth who was born in Norway in 1846.
· The fastest growing tissue in the human body is hair.
· The average human scalp has 100,000 hairs.

Mouth Facts

· In a month, a fingernail grows an eighth of an inch.

· People whose mouth has a narrow roof are more likely to snore. This is because they have less oxygen going through their nose.

· While sleeping, one man in eight snores, and one in ten grinds his teeth.

· It takes food seven seconds to go from the mouth to the stomach via the esophagus.

Brain Facts

Women are twice as likely to be diagnosed with depression than men in the United States.
The human brain has about 100,000,000,000 (100 billion) neurons.
From all the oxygen that a human breathes, twenty percent goes to the brain.
People who ride on roller coasters have a higher chance of having a blood clot in the brain.
Once a human reaches the age of 35, he/she will start losing approximately 7,000 brain cells a day. The cells will never be replaced.
It is not possible to tickle yourself. The cerebellum, a part of the brain, warns the rest of the brain that you are about to tickle yourself. Since your brain knows this, it ignores the resulting sensation.
A women from Berlin Germany has had 3,110 gallstones taken out of her gall bladder.
In America, the most common mental illness is Anxiety Disorders.
Your brain is 80% water.
Your brain is move active and thinks more at night than during the day.