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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 average human gut is home to perhaps 500 to 1,000 different species of bacteria.
Did you know?
If you could remove all of your skin, it would weigh up to 5 pounds.
Did you know?
The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).
Did you know?
There are 20 feet of blood vessels in each square inch of human skin.