19:50
"No child who is mouth breathing, and no adult who is mouth breathing, is reaching their full potential.
Many people will say, yes, they have their mouths closed during the day, but do you have your mouth closed during sleep?
Do you have your mouth closed during physical exercise? And where is the correct tongue resting posture?
Because
your tongue has got two places to be.
It's either in the roof of the mouth, or it's falling back into the throat.
If the tongue is falling back into the throat, the airway is compromised.
If the airway is compromised, your sleep is compromised.
And if your sleep is compromised, your day is compromised. "
21:10
"Mouth breathing is contributing to obstructive sleep apnea in a big way."
He makes a good case for the mouth taping at night. I think I'll try it again.