Heard from talk around the town that rock salt my lead to COPD repair. Yes, not only slowing the process down but fixing what has been damaged as well to a certain point. Some rock salt mines in Europe are being used as Hospitals because of the advantage it has not just over breathing but other functions as well. This sounds weird and dont know if I will try it, but the talk was to buy one of those painters masks, the good ones that have those unscrew sides on them. Un screw the side that has the carbon in it and re fill it with rock salt, put it back on and breathe that instead of your oxygen. Now I just heard this, don't take it for real, was just wondering if anyone else heard anything like this? Or anything in Europe about hospitals and old salt mines?