A MyCOPDTeam Member

Little helps from nurses and other members of rehab groups etc
Some may sound strange but they work!.
Humming as deep a note as you can causes voice box to vibrate and loosen mucus in the throat
Singing were told is very good to exersize the lungs and chest, though probably best done on your own unless you have a great voice and the breath.
In fact addenbroooks hospital have started a singing group in there respiratory treatment with some good results I believe. According to local news channel
Different ways to stretch arms and chest to expand lungs.
My copd caused by sarcoids which originally diagnosed as asthma almost 20 years ago wasn't. Till I was in hospital in 2015 with a PE and DVT that the sarcoids were first spotted. Since then have had umpteen tests and different meds with monthly hospital visits to the Royal Papworth lung defence clinic. My diagnosis now reads COPD brought on by Sarcoidosis which in turn was caused by exposure to substance or element unknown in the past.
Apparently could have been years ago and thinking about it used all sorts of stuff that these days are not used or require special precautions.