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How long do you think you will live? Many people don't think they will live a long life. How long will you live?

Probably much longer than you think.

In 1992, the University of Michigan's Health and Retirement Study asked 26,000 Americans over the age of 50 the chance of living to the age of 75. Now, researchers at the Brookings Institution checked the results to see if they were right.

In 1992, seven percent of respondents (应答者) gave themselves “zero” chance to reach 75. But in fact, nearly half lived to 75 or longer. Is it amazing?

Among respondents who gave themselves a 50 percent chance of living to 75, 75 percent lived to that age or longer.

And among those who said they were completely certain of living to the age of 75, nearly 8 in 10 did.

“In general, people wildly underestimate (低估) their chances of reaching 75, but you in fact can live longer than you think,” a researcher wrote on the blog. You'll probably live much longer than you think. Life expectancy (预期寿命) in the United States was 78.74 years in 2012, according to World Bank data, and 71 years worldwide.

"There is no clear relationship between how long people think they'll live and how long they actually do. We don5t know the reason of file results. Maybe people's life quality changes a lot but they don't realize,” the researcher said. In fact, respondents who gave themselves a 10 percent chance of living to 75 had at least a 60 percent chance of doing so.

Do you think that you511 live to 75? Just believe that you have a 90 percent chance, and you may probably do.