The Jaw and Tongue Release

Tension in the jaw and tongue is the hidden enemy of good vocal production. Most people carry unconscious tension in these muscles that restricts resonance and creates a tight, thin sound.

Try this: let your jaw drop open naturally, as if you are about to yawn. Massage the muscles where your jaw hinges (just below the ears) in gentle circles. Then let your tongue rest flat against the bottom of your mouth, completely relaxed.