Accidently breathing in thru nose
Oops, Dave, I think you misunderstood. When I am exhaling thru my nose, THAT is when I sometimes inhale through my nose also. If I'm exhaling thru my mouth I don't do that. Maybe from years of exhaling & inhaling thru my mouth only?
Anyway, I was wondering if there was a reason to exhale thru the nose rather than the mouth?
I'll try leaving my mouth slightly open while exhaling thru my nose. Maybe that will help.