Feel the tension . . .
Touch the muscles in the back of your neck, just under the skull. Are they tight or loose?
Sit with support . . .
Move your hips fully to the back of the seat and press your lower back against the chair back.
Tense, then release . . .
Tighten your neck muscles by jutting your chin and neck forward. Feel the tension throughout your neck and shoulders.
Keep going . . .