Most people smile when they are frustrated, according to a study.
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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.
34
If you're over 100 years old, there's an 80% chance you're a woman.
143
Intelligent people have more zinc and copper in their hair.
233
Men laugh longer, louder, and more often than women.
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Americans collectively eat one hundred pounds of chocolate every second.
60
On average women can hear better than men.
170
A couple had their wedding rings engraved with a waveform of their own voices saying "I do."
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