>I just learned to sleep with my mouth closed and I watch my breathing during the day too, and avoid breathing through my mouth It's not something you "learn"

>I just learned to sleep with my mouth closed and I watch my breathing during the day too, and avoid breathing through my mouth It's not something you "learn" if you have apnea. And if you don't, you don't normally have to learn it, it's natural, though some people might be accustomed otherwise.