Marathoners are the thoroughbreds of high-performance runners, but even the draft horses of the running world — slow and steady joggers — improve their health. A study out this week in the Journal of the American College of Cardiology finds that even five to 10 minutes a day of low-intensity running is enough to extend life by several years, compared with not running at all. It shows that the minimal healthy "dose" of exercise is smaller than many people might assume.

But if your favorite activity is a brisk walk in the park or a quick game of tennis, the research has implications for website you, too. "There is no question that if you are not exercising and if you make the decision to start — whether it’s walking, jogging, cycling, or an elliptical machine — you are going to be better off," says cardiologist Dr. Aaron Baggish, the associate director of the Cardiovascular Performance Program at Harvard-affiliated Massachusetts General Hospital and an accomplished runner himself
Take five to stay alive

The new study focused on a group of more than 55,000 men and women ages 18 to 100. About a quarter of them were runners. Over 15 years, those who ran just 50 minutes a week or fewer at a moderate pace were less likely to die from either cardiovascular disease or any cause, compared with those who didn’t run at all.
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