The adult human brain weighs about 3 pounds (1,300-1,400 g).
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Quick naps not only improve your alertness, but they also help in decision making, creativity and sensory perception.
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All the chemicals in a human body combined are worth about 6.25 euro (if sold separately).
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Dogs can be trained to identify the scent of lung cancer long before symptoms develop.
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It takes about 20 seconds for a red blood cell to circle the whole body.
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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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For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
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