Having good posture can help you avoid headaches, keep your neck and shoulders healthy and injury - free, and can even help improve your breathing. (wendyfitness.com)
So the best way I have found to improve my breathing pattern, is to relax regularly during the day and pay attention on my breathing. (ashotofadrenaline.net)
I strongly suggest that you be proactive in your treatment — both for improved breathing and also to see if you would qualify for a transplant. (health.com)