Most people harden the omohyoid muscle, end up straining that muscle when vocalizing or having the issue of hypertonic phonation.
The omohyoid muscle is a really unique muscle. Its location is through the sternohyoid muscle and the scalene muscle, from the hyoid bone, and it is attached to the shoulder blade.
The omohyoid muscle a digastric muscle. Its role is to assist in pulling the hyoid bone down, tighten fascia and expand the internal jugular veins.
It is very difficult to find and feel the omohyoid muscle because it really thin.
However, the omohyoid muscle is defined and visible against the skin in people who vocalize that have hypertonic phonation.
If the omohyoid muscle hardens, the thyroid cartilage is pushed toward the cervical spine and down, it then becomes hardened to control the voice. Furthermore, it can cause stiff shoulders, because the omohyoid muscle directly affects the trapezius muscle.
I would like to introduce how to stretch the omohyoid muscle at this time.
You need someone’s help because it’s difficult to do by yourself.
First, turn your face/head to a 45 degree angle. Next, in the opposite direction (friend to assist you) pull back your shoulders to the side (one side at a time )you are targeting. Then, slowly tilt (not straight up or too far back, to keep good balance) your head back. Please be careful not to try to hurt your neck.
Ask your buddy to extend the muscles outside between the hyoid bone and the sternocleidomastoid muscle by using their finger pad.
Repeat this stretching exercise approximately 10 times total.
Finally, extend the muscles between the sternocleidomastoid muscle and the shoulder blade, and press strongly (similar a to deep tissue massage movement) especially around the shoulder.
If you can stretch properly, you can expect a positive outcome with having a good effect on the voice as well as letting out a smooth voice.
Please try it once – especially before singing.