Adrian VanderHave sent in an article re dangers of over-exercise from the Wall Street Journal. Interesting to find out about the difference between soft and dense artery plaque. If the first two paragraphs whet your interest link will take you to the full monty. Enjoy.

A new study finds that exercise that is extreme in either volume or intensity may be associated with high levels of atherosclerosis in the coronary arteries.

The study, presented in August at a meeting of the European Society of Cardiology, studied 169 veteran competitive endurance athletes against a control group of 171 relatively sedentary subjects. Compared with the control group, the study found lower levels of coronary artery calcium in athletes who ran fewer than 35 miles a week or cycled fewer than 150 kilometers a week. But athletes who ran or cycled beyond that threshold were found to harbor higher levels of coronary artery calcium than did the control group.

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