Excerpt from February 2011 Yoga Journal article, "Straight to the Heart".
Why Yoga Helps: As Dr. Ornish explains, "Chronic emotional stress makes plaque build up twice as fast in the coronary arteries that feed the heart. Stress also causes the coronary arteries to constrict, reducing blood flow to the heart. It makes the platelets sticker and more likely to form blood clots that may precipitate a heart attack."
Yoga is perhaps the most effective stress-reduction method ever invented. Dr. Timothy McCall.