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Science 30 May 1997:
Vol. 276. no. 5317, p. 1325
DOI: 10.1126/science.276.5317.1325
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News & Comment

Physiology:
How Exercise Works Its Magic

Marcia Barinaga

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.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)