I haven't been able to really breathe through my nose my entire life. I've really never had any negative effects from it. Not cognitive (that I know of), top

I haven't been able to really breathe through my nose my entire life. I've really never had any negative effects from it. Not cognitive (that I know of), top of my class, now a SWE. Not dental, haven't had a cavity in 40 years. Not physical, I used to run track in HS/College and often got on the podium. Nor illness, I haven't had any sinus infections. It's possible I just don't know what I'm missing, but (highly anecdotally) I haven't felt I've suffered having to breathe thru my mouth at all. Maybe it'll take me out when I get older, but I also don't know the difference.