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Did you know?
Your heart beats over 36 million times a year.
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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
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Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.
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Blood is approximately twice as thick as water because of the cells and other components found in it.