When you sneeze, air rushes out of your nose at a rate of about 100 miles per hour!
Baby teeth hold places for the adult teeth below. Without baby teeth as a guide, adult teeth would grow in crooked and crowded.
Your skull protects your brain, inner ear and eyes. It is made up of 22 separate bones.
Your skin makes a special oil that keeps out water. If you stay in water too long, this oil gets washed away and your skin wrinkles up!
The average person has 100 to 150 eyelashes on their upper lid.
The average person blinks their eyes about 11,500 times a day.
Similar to fingerprints, each person has a different tongue print.
Fingernails grow about four times faster than toenails.
Blinking one eye uses over 200 muscles.
Your right lung is shorter than your left lung by one-inch, however, its air capacity is greater. The right lung has three lobes; the left lung has only two.
Muscles hurt after exercise because the circulatory system cannot provide oxygen to muscle fibers quickly enough. Because of this, the muscles built up lactic acid. The acid causes soreness and stiffness.
A funny bone is not a bone at all. It is part of the ulnar nerve located at the back of the elbow.
More than half of the body's total body heat can be lost through the head. That is why it is equally as important to wear some type of hat on a cold day as it is to wear a sweater or jacket.
If you yelled for 8 years, 7 months and 6 days, you would have produced enough sound energy to heat one cup of coffee.
The largest joint in the human body is the knee.
Your brain weighs about three pounds, but more than two pounds of it is water.
You breathe in about 7 quarts of air every minute.
A cough moves air at a speed close to about 600 miles an hour.
Almost half of the human body's total weight is muscle.
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