Also, went to numerous doctors over the years and no one cold pin point the issue. I was put on various medications to try and fix and nothing worked. The one thing that I noticed did help over time was going to a breathing specialist or a yoga instructor that is fluent in breathing exercises. It seems possibly somewhere along the line we forgot how to breathe properly. This helped tons..... Other than that, I am active and hike, run, workout...doesnt help or hurt with the breathing.