One thing that may be useful to all is a breathing resistance trainer. I have just ordered one as all info have read / rewiewer comments said that they found a positive improvement and in a lot of cases reduced / removed need for medication. I doubt that it will help a massive degree but any training of the lungs couldn't do any harm. I personnaly went for a Powerbreathe Sport device. Will let you all know in a few weeks if helped me get through Class 1 initial :-) Fingers crossed!!