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Did you know?
Your heart beats over 36 million times a year.
Did you know?
In 1864, the first barbiturate (barbituric acid) was synthesized.
Did you know?
Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.
Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.
Did you know?
Chronic marijuana use can damage the white blood cells and reduce the immune system's ability to respond to disease by as much as 40%. Without a strong immune system, the body is vulnerable to all kinds of degenerative and infectious diseases.