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About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.
There are more sensory neurons in the tongue than in any other part of the body.
The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
The average adult has about 21 square feet of skin.
If you could remove all of your skin, it would weigh up to 5 pounds.
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