Another Benefit of Endorphins?

A Science News article titled 'Runner's High' May Also Strengthen Hearts, indicates that substances known as opioids, which our bodies naturally synthesize, may do more than make us feel good. Natural opioids resulting from exercise were the object of analysis during research conducted with rats. Researchers from the University of Iowa have found out that what makes us feel good may also protect us from heart attacks. The details are at the linked article.