We see smiles far more clearly than any other expression...and can see them up to 300 feet away, the length of a football field.
Scientists have identified 19 different types of smiles, the most recognizable signal in the world. Social, polite smiles pull up the lips but never reach the eyes.
We use different muscles when we fake expressions than when we're honest.
Scientists predict that thousands of years down the road our teeth will be smaller, our heads balder, our noses will shrink and our eyes and ears will grow larger.
Although we think that laughter comes from an audience after something funny is said by a speaker, in actuality, the speaker laughs almost 50% more than the audience.
Girls cry five times more frequently than boys...and their tears tend to stream down their faces while boys' usually well up in their eyes.
The English language grows at a rate of about 1000 words each year.
A recent study of telephone conversations found that only 737 words make up 96% of all conversations.
The average person has a vocabulary of about 10,000 to 20,000 words but uses only a small fraction of these.
One third of our lives is spent sleeping.
You can't dream and snore at the same time.
Teens laugh more than twice as many times in a day than people over 65. People in the Northeast laugh less than all other Americans.
Men laugh most often at jokes and funny stories, women laugh most at the antics of people and animals.
A great sense of humor can add up to eight years to your life.
A good belly laugh can give you health-boosting benefits equal to ten minutes on a rowing machine. Not only does it burn calories, it increases oxygen intake, increases the amount of pain we can withstand and raises our immunity.
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