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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?
Approximately 500,000 babies are born each year in the United States to teenage mothers.
Did you know?
The horizontal fraction bar was introduced by the Arabs.
Did you know?
Coca-Cola originally used coca leaves and caffeine from the African kola nut. It was advertised as a therapeutic agent and "pickerupper." Eventually, its formulation was changed, and the coca leaves were removed because of the effects of regulation on cocaine-related products.
Did you know?
Vaccines prevent between 2.5 and 4 million deaths every year.