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Did you know?
There are 20 feet of blood vessels in each square inch of human skin.
Did you know?
In 1844, Charles Goodyear obtained the first patent for a rubber condom.
Did you know?
A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.
Did you know?
Blood is approximately twice as thick as water because of the cells and other components found in it.
Did you know?
There are more bacteria in your mouth than there are people in the world.