Locked short muscles / locked long muscles in upper crossed syndrome and lower crossed syndrome

Locked Short Muscles – Locked Long Muscles

Two opposing muscle groups, the “facilitated” muscles that are locked short and the “inhibited” muscles that are locked long.

tight neck extensor musculature can cause tension headaches

Tension Headaches

A tension headache is caused by excessive pulling force of tight muscles in the back of the neck that exert tension on their attachments on the head.