Marathon Running and the Heart

Those of us who enjoy physical activity are often looking to try different forms of exercise to keep the routines from getting stale and put variety in the workout. Often, people who are joggers consider stepping up their game and adding an endurance component by training for a marathon. After all, if a little aerobic exercise is good for the heart, a lot is probably better, right? While the jury is still out on how much is too much and marathon running is definitely not the fitness answer for everyone, new research does suggest that it can lower the risk of developing heart disease for middle-aged men.

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