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Did you know?
There are 20 feet of blood vessels in each square inch of human skin.
Did you know?
There are more sensory neurons in the tongue than in any other part of the body.
Did you know?
About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.
Did you know?
Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.
Did you know?
Approximately 500,000 babies are born each year in the United States to teenage mothers.