The largest cell in the human body is the female egg and the smallest is the male sperm.
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An average heart beats 100,000 times a day, pumping some 2,000 gallons of blood through its chambers. Over a 70-year life span, that adds up to more than 2.5 billion heartbeats.
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It takes twice as long to lose new muscle if you stop working out than it did to gain it.
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The average sperm cell swims at 8 inches per hour.
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Every year your body replaces 98% of your atoms.
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Our Right Lungs takes more air than our left lung.
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When you get goosebumps and your hair stands, the hair helps to trap air, making you feel warmer by keeping in your body heat.
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