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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?
The FDA recognizes 118 routes of administration.
Did you know?
The average adult has about 21 square feet of skin.
Did you know?
There are 20 feet of blood vessels in each square inch of human skin.
Did you know?
Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.