- Excessive inspiratory effort is required;
- It does not, as some believe, “open the pharyngeal resonators;”
- It takes too long;
- It is noisy;
- It tends to tense and raise the chest, and
- It prohibits respiratory parts set in motion during inspiration from recovering in time to make swift, easy adjustments for phonation.
Taken from “A Dictionary of Vocal Terminology” by Cornelius Reid.