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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?
Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.
Did you know?
Excessive alcohol use costs the country approximately $235 billion every year.
Did you know?
There are more bacteria in your mouth than there are people in the world.
Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.

