The Benefits of Sleeping with your Mouth Closed

Benefits of nose breathing
You won’t experience dry mouth as frequently as you do when you routinely breathe through the mouth, and you won’t have bad breath as often either. Studies have been conducted which show that people who breathe through their nose at night tend to live longer lives than those who are chronic mouth-breathers. Nasal breathing can be extremely beneficial for people who have asthma, or who suffer from stress and anxiety. It has also been shown to improve athletic performance among elite athletes. If you aren’t breathing through your nose, that could be an indicator of some larger issue, like sleep apnea.
How to ensure you’re nose-breathing
This practice also discourages sleep apnea and sleep deprivation. Patients who breathe through their nose will almost always enjoy improved sleep, with better REM and NREM scores, indicative of more restorative sleep. The cure for mouth breathing could hardly be more simple, and after a night or two with a taped mouth, you won’t even notice that the tape is there. But you’ll certainly come to notice improved sleeping habits, and a more restful sleep period at night.