Deliberately explore the range of head movements in the water in order to identify incorrect positions, then differentiate them from the sensations associated with the correct position.

* Lie flat at the surface of the water, with your face immersed using the snorkel
* Let the body float without tension
* Deliberately take a position with the chin toward the chest
* Observe the sensations associated with this position
* Deliberately take a position with the chin lifted
* Observe the sensations associated with this position
* Return to the correct head position
* Compare the sensations of incorrect positions with those of the correct position
* Repeat this exploration several times
* Use sensations as indicators to recognize and correct your position

* Chin-to-chest and chin-lifted positions are explored deliberately
* The correct position is regained after each exploration
* Differences in sensations are observed carefully
* Reference points from D-6.1 are used to return to the correct position

* I recognize the sensations of a head that is too flexed
* I recognize the sensations of a head that is too lifted
* I understand that seeing my feet or my stomach indicates an incorrect position
* I understand that looking forward indicates an incorrect position
* I return to the correct position thanks to the sensations of the neck being pulled backward and a slight double chin
* I can use these sensations as indicators to correct myself when I swim