Body Facts

• 50,000 of the cells in your body will die and be replaced with new cells, all while you have been reading this sentence!
• In 1 square inch of skin there lies 4 yards of nerve fibers, 1300 nerve cells, 100 sweat glands, 3 million cells, and 3 yards of blood vessels.
• The structural plan of a whale's, a dog's, a bird's and a man's 'arm' are exactly the same.
• Most people blink about 25 times a minute.
• Each square inch of human skin consists of 20 feet of blood vessels.
• Nerve impulses to and from the brain travel as fast as 170 miles per hour.
• You use an average of 43 muscles for a frown.
• You use an average of 17 muscles for a smile.
• Every two thousand frowns create one wrinkle.
• You burn 26 calories in a one minute kiss.
• A sneeze zooms out of your mouth at over 100 m.p.h.
• If you were freeze-dried, 10% of your body weight would be from the microorganisms on your body.
• Your ears and nose continue to grow throughout your entire life.
• When you eat meat and drink milk in the same meal, your body does not absorb any of the milk's calcium. It is best to have 2 hours between the milk and meat intake.
• Only humans and horses have hymens.
• The tooth is the only part of the human body that can't repair itself.