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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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A recent study has found that following a diet rich in berries may slow down the aging process of the brain. This diet apparently helps to keep dopamine levels much higher than are seen in normal individuals who do not eat berries as a regular part of their diet as they enter their later years.
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Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.
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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.
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If all the neurons in the human body were lined up, they would stretch more than 600 miles.