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This is Scientific American 60-Second Science. I'm Christopher Intagliata. Got a minute?

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I'm running over the Williamsburg Bridge, in New York City.

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It connects Brooklyn to downtown Manhattan.

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It's one of my favorite places to run,'cause the views are great.

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Until you look at all the taxis and trucks spewing exhaust.

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Always makes me wonder, is all that pollution essentially undoing any health boost I'm getting from the run?

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A new study of more than 50,000 Danish adults suggests I might be ok.

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Of course, being Denmark, more than two-thirds of them regularly rode a bike—and half played sports.

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As you might expect, both activities lowered the Danes' risk of death during the 17-year study period.

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But that effect held true even for the Danes exercising in the most polluted parts of Copenhagen, suggesting that the short-term heavy intake of pollutants during exercise is just a small proportion of their overall exposure to pollution, and thus, does not diminish the benefits of exercise.

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The results are in the journal Environmental Health Perspectives.

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Of course, Copenhagen has pretty clean air, even by European standards.

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So these results might not translate to, say, Beijing.

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And the researchers still advise exercising in green spaces, parks, and other road-free areas if possible.

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But hey, I'd have to head all the way to midtown Manhattan for that.

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For Scientific American 60-Second Science. I'm Christopher Intagliata.

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