That's fantastic. One of the benefits of OP is the pulling of phlegm from everywhere, especially your lungs. The drawing power is amazing.
After OPing for over 2 years, I still often spit out a bit plug of phlegm. What a relief.
That's why I always say that if you have any congestion, that you should OP back to back until you spit out zero phlegm. This has helped me stave off many lung type infections. I haven't had allergies for over two years, and I used to suffer from congestion from that.
OP is awesome. I have no idea how it does what it does, and at this point I hardly question it. I'm just happy that I even know about it.