When I first became aware of Better Breathers Clubs, I searched and could not find one within a few miles of my home, so I became discouraged until I learned The American Lung Association has what is called The Better Breathers Network. Better Breathers Network (lung.org)

Here we find monthly virtual meetings which have valuable information. Suburban Hospital hosts the meetings, and they featured a wonderful video from Memorial Sloan Kettering this morning which gives five exercises to use to increase the strength of the breathing muscles. Breathing Exercises | Memorial Sloan Kettering – YouTube

The video suggests that the exercises be done in the sequence shown. These exercises are as follows.