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Did you know?
Your heart beats over 36 million times a year.
Did you know?
The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
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Asthma cases in Americans are about 75% higher today than they were in 1980.
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The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.
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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.