The phlegm comes from your lungs. It may mix with saliva in your mouth.
Phlegm is the thick mucus and sputum the material coughed up from the lining of the respiratory tract.
phlegm
It is common for your body to rid itself of excess phlegm in the mornings.
phlegm
Well I'm not a doctor, but I do know that after you quit smoking you occasionally cough up phlegm for anywhere up to a year after you quit. This is an effect from the lungs healing themselves.
If it is phlegm from being sick (if it is yellow or green) then take a decongestant or gargle with warm salt water, which breaks up the phlegm and kills the bacteria that produce it.
A person with emphysema would cough up to about 2 cups of phlegm per day. That would mean in 8 days, they would cough up a gallon of phlegm. Drink up!
Phlegm is mucous. It is generally referred to as "phlegm" and sometimes as "sputum" when referring to mucous found in the throat or expelled from the lungs/bronchial passages by way of a cough.
Phlegm is a mucus-like substance produced in the respiratory tract, while sputum is a mixture of saliva and mucus that is coughed up from the lungs. Phlegm is typically clear or white, whereas sputum can be yellow, green, or bloody, indicating infection or other health issues.
The black phlegm is caused caused by tar being built up in the lungs. This is caused by exsessive smoking or coming in to contact with smoke regularly
Where I live, 'Hock up" means coughing up phlegm, especially the type that you can spit.