Forcing a smile measurably improves mood due to facial feedback to the brain.
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Your brain uses 20% of your energy.
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The Tyrannosaurus rex may have had excellent vision.
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The human brain contains about 86 billion neurons.
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Some animals can regenerate entire body parts.
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The Code of Hammurabi established early written laws.
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A sea anemone uses stinging cells to capture prey.
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The heart pumps blood through approximately 60,000 miles of blood vessels.
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Grizzly bears can run at speeds over 30 miles per hour.
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