Even if someone has a pulse-ox or... a heart rate variability monitor, you can breath in certain ways and instantly see what it does to your body. Joe Rogan Experience #1506 (2020)
The less you use your nose, the less you're going to be able to use [it]... When people start habitually breathing through their mouths, their noses are going to start to close... Joe Rogan Experience #1506 (2020)
The doctor of speech, language pathology at Stanford... measured people who had laryngectomies... She found between 2 months and 2 years, their noses were completely blocked. Joe Rogan Experience #1506 (2020)