Of course, yoga can do it. People think Yoga is just a "new-found ability to touch your toes", they are mistaken! The practice of Yoga has a substantial foundation in science and provides all-round benefits to a human being.
Owing to its many positive effects - direct and indirect - on the cardiovascular system, Yoga can play a pivotal role in heart care. Yoga, as defined by Pitanjali, is "restraining extrovert activities of the mind so the self emerges in its own form". It drives a person to self-realization, to awaken latent powers of the body through various asanas (yogic postures) and the mind through meditation and pranayama (breath control). All this results in relaxation of the body and the mind.
here you can read in greater detail about it: http://www.medindia.net/yoga-lifestyle/yoga-heart.htm