Repeated coughing is: a big load on the intercostal & abdominal muscles. The primary lung cleaning mechanism is called the mucociliary elevator, study: http://goo.gl/IXDw19 for some understanding. If not working well enough, then mucous accumulates, dries out & coughing to help clear airway is the backup, yet places a big unusual exercise load on all the muscles involved; may weaken/sore & cough become less effective.
Answered 4/27/2017
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A doctor has provided 1 answer
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