The use of sound-producing muscles during the vocal warming up enhances the blood flow to the muscles and energizes the vocal cords. As a result, the secretion of adrenaline is increased, thus improving the vocal cords performance.
When performing the vocal warming up, one must carefully listen to the voice produced, comparing it to the desirable outcome, realizing it takes time for the voice-producing muscles to relax and perform optimally.

Talya

TMRG Voice Specialist