Compromised breathing is a major problem in modern society. Pollution, smoking, infectious disease and simply aging slowly erodes the effectiveness of our breathing capacity. Teaching breathing skills is not a common practice in the United States. Medical practitioners are doing a better job now than in the past. Competitive practices from alternative medical traditions have increased the use of breath techniques in allopathic medicine. The names of the exercises are different, but the tecniques are similar.
The examples in the following videos are really important to learn before you actually have need to use them to keep breathing. I have put together a selection with different teachers and body types hopefully one resonates with you - to your improved health.