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Did you know?
If all the neurons in the human body were lined up, they would stretch more than 600 miles.
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Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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The training of an anesthesiologist typically requires four years of college, 4 years of medical school, 1 year of internship, and 3 years of residency.
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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.