@KoolDude the hyoid/thyroid cartilage apparatus is hanging mostly freely suspended by muscles/ligaments, and depending on various parameters, including muscular tone, amount of fat around the structures, can “migrate” and establish new position within the limits of ligaments.
When you swallow, you can feel it moving up, down, and then returning to the “base” position. A problem develops when the muscles around (including SCM) become stiff, preventing free movement of hyoid/thyroid cartilage.
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