Nausea, vomiting and fear: these are the words some people use to describe roller coasters. But to others, roller coasters are nothing but exhilarating.
According to Frank Farley, a psychologist at the University of Wisconsin, there is a chemical reaction that happens in the brain when people become either afraid or excited.
''It's those with the thrill-seeking personality who come back again and again. They like adventure, like high diving and hang gliding,'' Farley told the New York Times.
The response that happens inside the brain will effect every person in one of two ways. Watch the video above to find out what happens.
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