Glad you're seeing an improvement and can hopefully feel a difference too and it's not just you perfecting your technique on the blow meter thingy. I say this because I have to have one done annually at work and the first time I did it it showed my lung age as 54 (can't remember the numbers - that one stuck in my mind) and the nurse said it takes a bit of getting used to and if I had another couple if go's it'd be better. Her making me feel better or fact - I don't know...