Hi Debi,
I have been doing yoga for years... at first off and on, but after my second OHS, I started doing it regularly about 4 months out. I take classes now 2-3 days a week in addition to my other workouts. I truly believe that yoga is remarkable for your body and mind, and most definitely your heart. I would like to get certified to teach over the summer, and one of the things I would like to do is teach heart patients. There are many different forms and many different things you can do/not do. It is true that yoga focuses on your core (which helps with balance) and strengthens your body as well as your mind. I could go on and on, as I love it and consider it an essential part of my life. The peace of mind I gain practicing yoga is something I can't imagine living without. Definitely a great stress reliever, which is of course good for your heart. One thing my teachers alway say is that there is no competition in yoga. I find this to be true, as when I am practicing, I am focused inward as opposed to what is going on around me. I do agree with a previous comment about finding the right teacher. I have a couple of favorite teachers and only go to their classes, as I enjoy their style and personalities.. but some people love the other classes (I take at my gym).
I am going on and on, but just wanted to give you a supportive thumbs up!