Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
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The human brain has the capacity to store everything that you experience.
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Poor eyesight (myopia) is associated with higher IQ.
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The average sperm cell swims at 8 inches per hour.
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If you are cold you are more likely to be hungry because you use energy to keep warm.
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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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Your body is creating and killing about 2.4 million red blood cells per second.
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