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February 15, 2013 Exercise buffs who take dietary supplements with the ingredient know as DMAA say the stimulant gives them a boost of energy. But some researchers and the Food and Drug Administration are worried that these products could be dangerous.

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On All Things ConsideredPlaylist

January 7, 2013 Researchers find that when young people exercise, their mental health improves through a more positive self-image and through winning friends. But sports psychologists aren't sure whether exercise makes teenagers more confident or more confident teenagers take part in sports.

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On Morning EditionPlaylist

November 19, 2012 Endurance athletes often turn to the same stimulant that gives your morning cup of joe its jolt: caffeine. They're increasingly using caffeinated gels and drinks when they compete. But how much is too much?

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On Morning EditionPlaylist

November 19, 2012 Researchers and companies are bringing movement back into the office with treadmill desks, walking meetings and games. Employees say it has helped them lose weight and be more productive.

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On Morning EditionPlaylist