I think many people have experienced it. They coughed so dark that they were flushed with old phlegm in their throat that they could not cough it out. Although cough is a reflex action of the human body, not everyone really knows how to cough up phlegm. Expecting phlegm is a technical job. The following doctor clove will teach you how to expectorate phlegm scientifically, correctly and effectively, or help those who cannot cough up phlegm themselves to cough up phlegm. A home-based approach 1. I have the strength to cough (1) Sit down: First find a comfortable place to sit down and try to sit up straight; (2) Deep breathing: slowly take deep breaths for 5-6 times, then hold Read More …