Singing is an activity that is borne out of the psyche, muscles and skeleton, in short, the overall posture.
When the posture is in harmony, then the voice that produced is optimal. Singing gives more joy when the individual is free of physical and psychological restrictions.
Singing is a form of self-expression. The nature of the vocal expression is dependent on the manner in which we express the content of the vocal product through our posture. This is only possible when the unique individual is free to determine his posture (introvert/extrovert) without this being a compromise for quality of voice. On the contrary, the chosen posture should reinforce voice quality.
Ultimately, we can conclude the following:
Singing is a performance sport and, therefore, medical diagnostic and therapeutic support is needed for body and mind.