Nerve impulses to and from the brain travel as fast as 170 miles per hour
The brain operates on the same amount of power as 10-watt light bulb
Your brain uses 20% of the oxygen that enters your bloodstream
The brain is much more active at night than during the day
Scientists say the higher your I.Q. the more you dream
Facial hair grows faster than any other hair on the body
Every day the average person loses 60-100 strands of hair
The fastest growing nail is on the middle finger
Fingernails grow nearly 4 times faster than toenails
The largest internal organ is the small intestine
The human heart creates enough pressure to squirt blood 30 feet
The surface area of a human lung is equal to a tennis cour
Women’s hearts beat faster than men’s
Your left lung is smaller than your right lung to make room for your heart.
During your lifetime, you will produce enough saliva to fill two swimming pools.
Your teeth start growing 6 months before you are born.
After eating too much, your hearing is less sharp
If saliva cannot dissolve something, you cannot taste it
Everyone has a unique smell, except for identical twins.
By the age of 60, most people will have lost about half their taste buds.
A baby’s head is one-quarter of it’s total length, but by age 25 will only be one-eighth of its total length.
Humans can make do longer without food than sleep
Over 90% of diseases are caused or complicated by stress.
We are about 1 cm taller in the morning than in the evening.
The strongest muscle in the human body is the tongue
The hardest bone in the human body is the jawbone.
You use 200 muscles to take one step
Every tongue print is unique.
Your body has enough iron in it to make a nail 3 inches long.
The most common blood type in the world is Type O
It is not possible to tickle yourself.
Women burn fat more slowly than men, by a rate of about 50 calories a day.
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