Can Smiling While Exercising Improve Performance?

Runners who smiled ran more economically than those who frowned.

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Dominant Del Potro into third round at rainy Cincinnati

Juan Martin del Potro quickly dispatched South Korean Chung Hyeon 6-2 6-3 in a second-round match at the rain-hit Cincinnati Open on Thursday that was carried over from the previous day because of inclement weather.

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