I have moderate emphysema and only one hour after turning on the basket of salt rocks yesterday afternoon, I noticed my lung capacity had increased and my breathing improved. A very noticeable difference - more noticeable improvement than after I use my Ventolin or Trelegy inhalers. My IDW19 watch has always shown 97% blood oxygen level and today is registering 100% My finger oximeter, however, is still registering 97%. I don't understand the reason for the discrepancy in the readings, but I...