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This is Scientific American 60-Second Mind, I'm Christie Nicholson. Got a minute?

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Music helps us get through hard, physical work.

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Think of the songs produced by soldiers marching or chain gangs building railroads.

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But does simply hearing the music account for the effect?

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Or is there a bigger boost when the workers themselves make the music?

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To find out, scientists had subjects exercise on a fitness machine under two conditions.

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In one trial, the volunteers just listened to music.

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In the second run, the machines were rigged to start playing music only when the participant began to move.

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And the pace at which the subject exercised determined the speed of the music.

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Measurements of the participants' oxygen intake and muscle tension showed that they actually expended less energy when they controlled the music.

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The participants also rated their perceived level of exertion as being lower when their actions dictated the sound.

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The study is in the Proceedings of the National Academy of Sciences.

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So next time you're working the elliptical at the gym, perhaps make your own music.

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You could simply sing along to whatever's playing on the loudspeakers.

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(sound)

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Unless it's Blurred Lines. Work it. Don't twerk it.

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(sound)

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Thanks for the minute, for Scientific American 60-Second Mind. I'm Christie Nicholson.

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