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 word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.
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Asthma cases in Americans are about 75% higher today than they were in 1980.
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Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.
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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).
Diagram of a typical fossil-fueled power plant
Fetal Circulation Diagram
Apoptosis Diagram
Bacteria Diagram
Common Abbreviations and Symbols Used by Massage Therapists Cont.