@imh7...Hi there....I use the aerobika x2 a day for app 15 minutes each time, to get the mucous out of my lungs...in the am, I don't get much, but after I work out for an hour it all comes up with the aerobika...I also use the saline...sometimes we get conflicting information, and just have to use our own common sense as to what works for us....I find Terry's information always informative, and use her information as a baseline..