When you take a step, you are using up to 200 muscles.
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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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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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Chewing gum boosts your brain power.
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It takes about 20 seconds for a red blood cell to circle the whole body.
102
Dogs can be trained to identify the scent of lung cancer long before symptoms develop.
190
The average person's skin weighs twice as much as their brain.
131
The human brain has the capacity to store everything that you experience.
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