Front View of Heart and LungsQ: Got a friend (a smoker) who ended a camping trip in the mountains (probably around 6K feet) by getting a collapsed lung. His wife got him to the hospital and all is well--he is even back to enjoying his electronic cigarettes (says it is not really smoking!) Anyway, I was thinking of using this as an opportunity to (finally) get him to try breathing meditation, Yoga/Tai Chi—but the lung thing has me worried. This was...