Can Smiling While Exercising Improve Performance?

Runners who smiled ran more economically than those who frowned.

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WATCH: Highlights: 'American Idol' finale, part 1

Three singers are still standing after bringing their A-game ahead of tonight's final episode, where a winner will be announced. ABC News' Will Ganss breaks down the top moments.

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Rubbish rage: officers protect collectors in Dutch recycling wars

Powers to censure recalcitrant households have sparked fears for workers’ safety Refuse collectors in the Netherlands are being followed by close protection officers after getting the power to issue red and yellow cards to force householders to properly r...

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