BodyMedia CEO Christine Robins says the company has the world's largest living database of energy output, activity and behavior change.

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The economic burden of the tax system, which measures the lost economic output from a tax system that penalizes productive behavior.

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"It's always a disappointment when someone's personal behavior doesn't line up with their artistic output or your enjoyment of their art, " Levy said.

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Applying this demographic view to recessions and recoveries suggests that the future recessions with historically typical cyclical behavior will have steeper declines and slower recoveries in output and employment.

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