Health: Exercise: What A Little Can Do

The hardest part about starting a new exercise routine is just that: starting. But two new studies in the Journal of the American Medical Association should help get you off the couch. In the first, researchers put 184 sedentary, overweight women on diets of 1,200 to 1,500 calories a day and exercise plans of varying intensity that ranged in duration from 30 to 60 minutes a day. The scientists expected that more exercise would yield greater benefits, and it did. But to their surprise, the difference was only marginal. Even 30 minutes a day of moderate exercise, such as walking, led...

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