Static flexion: To intensify the movement from exercise 1, a slight pressure can be applied to the chin with the hands. It is best to do this with the gap between your index finger and thumb. Place this in the dimple under the lower lip and lift the forearm so that it is parallel to the floor (this avoids levering movements).
Now gently push the head further back into the movement, hold the position briefly (approx. 5-10 seconds) and then release again. Continue with the next exercise.