The human brain has the capacity to store everything that you experience.
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The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
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The average sperm cell swims at 8 inches per hour.
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Dogs can be trained to identify the scent of lung cancer long before symptoms develop.
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Cracking your knuckles does not actually hurt your bones or cause arthritis. The sound you hear is just gas bubbles bursting.
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After age 30, the brain begins to lose about 50,000 neurons per day - shrinking the brain .25% each year.
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The human brain doesn't stop developing until about 25 years old.
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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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