"Jim Fisher" wrote in message
. ..
"Larry Dighera" wrote in message
3. Don't swallow phlegm; blow and expectorate

I've always know this but hardly ever heed it. Why, exactly, is this
necessary?

--
Jim Fisher

You want to get rid of it, plus the factor that some of the swallowed stuff
does not get swallowed, but will slowly run down into the lungs again, where
you don't want it.
--
Jim in NC