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The general outline of this therapy can be found here: Best natural cough treatment. This is the way how you can stop coughing for good. An additional factor to stop coughing naturally is to use Earthing for grounding the human body to get Earth's electrons to reduce inflammation.
Controlled coughing is a therapeutic technique that engages both the chest and stomach muscles in a way that improves mucus clearance. Unlike hacking which uses the chest muscles more than the diaphragm, controlled coughing focuses on stabilizing the core muscles to engage the diaphragm more effectively.