When working out is too much of a good thing

Related: Fitness

1. Fitness
   1. Brisk walk may be as good as a run, study finds
   2. Smart jocks: Fit kids do better at math, reading
   3. Seeing green might make your workout better
   4. No time to exercise? Try 10-minute workouts
   5. Stressed? Exercise may help ward off anxiety
2. Headlines from AOL That's Fit
   1. Some Good News? Are Americans Cutting Back on Sugar Intake?
   2. I Ditched Dieting -- And So Should You
   3. Kate Bosworth's Fit Routine
   4. Should We Fear Our Genetics?
   5. What Nutritionists Order When Eating Out
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