In U.S., exercise has bigger emotional payoff for low-income

The little things in life may not be quite as good for people with money as they are for those without, but they're good for the people with money, too. Megan Cochrane and Dan Witters quantify the effects of eating right and exercising in an analysis based on the Gallup-Healthways daily survey series. The writers broke the sample down by income and found that "taking care of oneself" helps close the emotional health gap that separates the high earners from the low earners.

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