Why make a conscious effort to become a nasal breather?
When you stop mouth breathing and learn to bring your breathing volume toward normal, you have better oxygenation of your tissues and organs, including your brain.
As noted in a previous discussion: https://onebody.live/2018/02/20/control-cravings-by-nasal-breathing/
Processed foods, which tend to acidify your blood in an attempt to maintain normal pH, will also make you breathe heavier. This is because one of the roles of carbon dioxide, which is in your blood, is to regulate pH. Besides water, raw fruits and vegetables have the least impact on your breathing, followed by cooked vegetables. Processed, high protein and high grain meals have the greatest adverse effect on the way you breathe.
Nitric oxide is found in your nose, so when you breathe through your nose, you carry a small portion of the gas into your lungs.
Nitric oxide is:
• A significant bronchodilator (improve respiration)
• An antibacterial agent that helps neutralize germs and bacteria
• A vasodilator (lower blood pressure)