Exercise may be good for you, but like everything else, it should be done in moderation According to a report by The Wall Street Journal, too much physical activity may be detrimental to the heart.

These effects, however, seem to be more rampant among endurance sports enthusiasts.

Based the long-term National Runners' Health Study, researcher Paul Williams found that out of 2,377 runners who survived heart attacks, 526 have died over the past 10.4 years, 71.5 percent of which is due to cardiovascular disease. Interestingly, those who walked or ran after their heart episodes lowered their chances of dying due to a heart condition, but those who exceeded 10.7 kilometers of walking or 7.1 kilometers of running daily slowly increased their risk.

This doesn't only happen to those with previous heart problems. The additional six years that running gives to healthy individuals diminishes after doing 30 miles week, while the benefits of lower blood pressure and cholesterol levels can be offset by an increase in risk of atrial fibrillation (unnatural heartbeat rhythm) and coronary-artery plaque.

Researchers say that health buffs, especially endurance sports enthusiasts, should give the body time to recuperate. Although competitiveness pushes many to go farther and faster, doing so may in fact cause more harm than good. Moderation is the key. As the old adage goes, too much of a good thing may end up being bad for you.

(Photo by gwaar via Flickr Creative Commons)

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