Understand and identify incorrect head positions in order to more easily recognize the correct posture.
The objective is to create clear sensory references between incorrect positions and the correct one.

* From the neutral position, deliberately move into extreme positions:
* chin lifted toward the sky (extension)
* chin lowered toward the chest (flexion)
* Hold each position for a few seconds.
* Then return to an intermediate position.
* Compare the sensations between the extreme positions and the central position.
* Repeat several times.

* The extreme positions are clearly reached (flexion / extension).
* Sensations are observed without excessive tension.
* The return to a central position is controlled.

* I can easily recognize the sensations of an incorrect position.
* I am able to identify when my neck is in flexion or extension.
* I can more easily return to a neutral position after exploration.
* I understand that certain sensations indicate an incorrect posture.