Active isolated stretching of the neck

The purpose is to stretch the posterior neck into flexion and rotation to assist increase mobility. 

Actively flex/nod and rotate approximately 45 degrees (direct the nose towards the armpit) until a stretch is felt. Place the hand (same side as the armpit) on the back of the head and gently stretch further. Add more rotation, or side flexion, or more "nod" to change the exact location of the stretch.