Humans are capable of running 40 mph according to a study by bio-mechanical expert Dr. Matthew Bundle. Today's fastest man, Usain Bolt, has a top speed of 28 mph.
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By weight, Bone is five times stronger than steel.
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When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
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You can't tickle yourself.
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Human hair and fingernails continue to grow after death.
7
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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It takes twice as long to lose new muscle if you stop working out than it did to gain it.
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