The Stuffed-Up Nose
Just as you can sound too nasal, you can also sound too non-nasal, as though your nose is stuffed up. And your nose may very well be stuffed up, blocking your breathing passages. In this case, it is essential to consult with a qualified ear, nose, and throat doctor. He can provide you with certain medications or may even perform surgery to reduce the blockage. You may also sound this way because you unconsciously close off your own nasal passages. The following exercises help you eliminate your clogged-up sounds. Repeat each one of the following sounds five times in succession, so that it sounds like you are saying one word (mamamamama, for instance). Do this with each of these separate nasal sounds and repeat five times.

mamamamama
mo ma mu me
nananananana
no na nu ne
ung ung ung ung ung
lung hung sung rung