Have you ever wondered why the second someone tells you to "relax" you feel tense? The same is true for trying to "open your throat" when you sing—often conscious awareness can be the source of tension. Functional Visualization is a method of controlling the specific muscle groups that contribue to singing by focusing on strengthening the brain's signal to them utilizing extremely specific visual suggestion/instruction. A far cry from the vague "put it in the mask" and nebulous "feel your diaphragm" instructions many established singers are used to, Functional Visualization can help established singers gain advanced control over even the most-insidious vocal gestures.
Specific to the voice, this form of physical therapy breaks up microscopic tissues hindering the length and flexibility of the crucial singing muscles. The most innovative and effective method of training in the series, Structural Integration focuses on alleviating the causes of tension in the tongue, throat, larynx, neck and jaw directly instead of learning ways to "sing around" them. Without exceptional flexibility, a dancer would be extremely limited in her mode of execution. Likewise, a singer without internal flexibility inside the throat and around the larygeal muscles suffers a similar fate.