Here is a series of 9 yoga poses for a healthy heart (pdf) from the innovative work of Dean Ornish, MD.
For over 30 years, research has shown how comprehensive lifestyle changes can often halt, and even reverse, heart disease. Program components include a low fat diet, exercise, social support, and stress management (yoga, guided relaxation, breathing, meditation). Reversing Heart Disease, Love and Survival, and other books and articles by Ornish contain the details and data you’ll want to have about the lifestyle for a healthy heart. This yoga series was originally published in Yoga Journal (March 06).
LINK: 9 Yoga poses for a healthy heart (pdf)
A great resource for guided relaxation, breathing and meditation is Yoga Meditations: Timeless Mind-Body Practices for Awakening.