A posture headache is muscle and joint-driven pain from neck strain, while a migraine is a neurological condition involving specific brain and nerve pathway changes, and the two respond to completely different things.
A neck reset is a short, targeted sequence of positional changes and muscle release techniques designed to interrupt the tension pattern behind a posture headache within minutes, instead of over days.
A posture headache, often called a cervicogenic headache, is head pain caused by muscle tension and joint strain in the neck, most often from forward head posture and rounded shoulders.
Posture correction is the gradual process of retraining muscles, joints, and movement habits to restore your spine's natural alignment, and it typically takes weeks to months depending on severity and consistency.