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This is Scientific American's 60-Second Science. I'm Karen Hopkin. This'll just take a minute.

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It's tough to have a job where the boss is always riding you.

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That's literally the case with a horse.

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Now a study finds that stress experienced by the equine spine can vary drastically with the style and skill of the rider.

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The findings are trotted out in the Journal of Experimental Biology.

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Your average riders have two basic choices when it comes to staying on a moving steed.

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They can clamp their thighs tight and try to remain seated,

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or they can bob up and down with the rhythm of the horse, standing in the stirrups as they rise off the saddle.

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But which is better for the horse?

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Researchers filmed dressage riders as they trotted using both techniques.

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And they found that riders who use the more bouncy 'rising trot' actually keep their center of mass more steady when they stand,

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which reduces the force on the horse's back.

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Now, jockeys take this position to the extreme.

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By standing in the stirrups for the entire ride, a jockey's center of mass follows an almost flat line.

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Which makes for a faster race to the finish, and a less burdened beast.

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Thanks for the minute, for Scientific American's 60-Second Science. I'm Karen Hopkin.

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