The human brain has the capacity to store everything that you experience.
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Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
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Your heart will pump about 212 million liters in its lifetime.
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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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It takes about 20 seconds for a red blood cell to circle the whole body.
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The average person's skin weighs twice as much as their brain.
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An Indian man known as "Snake Manu" can put small snakes, including deadly cobras, into his mouth and pass them out through his nose.
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Dogs can be trained to identify the scent of lung cancer long before symptoms develop.
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