I have a pectus excavatum. It's where your rib cage is rather concave, making sort of a chest cavity. Any tips? Such as specific exercises? Also, I have a bit of a problem with relaxing, too. I'm not sure if I get tense BECAUSE of my reduced air pressure or not... (because when the going gets tough, you always get more tense) Kinda stinks for me; in a way I wish I didn't choose the trumpet as my instrument, but I just love it too much! Yeah, I know the situation is unusual; however, about 1 in 500 have this condition, meaning there are thousands of trumpet players in the same boat as me. Thanks for any advice you can get, even though I'm not sure if any here are experts on this.