Home > Health > On Fitness > 7 Tips From Uncle Sam's New Fitness Guidelines
Senior Writer Katherine Hobson writes about keeping your body fit and your diet healthy—and what those phrases actually mean, according to science. A longtime endurance athlete, she enjoys both training and Nutella in moderation. Ask her your burning exercise and nutrition questions at onfitness@usnews.com. Follow Katherine on Twitter at twitter.com/katherinehobson.

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