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The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.
Everyone has one nostril that is larger than the other.
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.
Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.
When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).