News and CommentPhysiology

How Exercise Works Its Magic

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Science  30 May 1997:
Vol. 276, Issue 5317, pp. 1325
DOI: 10.1126/science.276.5317.1325

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A great deal of evidence suggests that exercise has several effects that can help protect the heart. Among them: It lowers blood pressure, boosts blood volume, and consumes bad blood fats, such as triglycerides, while raising blood levels of the so-called good cholesterol carried in the blood's high-density lipoprotein particles.