To do this stretch the stretcher is supine with their head and neck rotated to one side as far as it will go. Make sure the stretcher keeps their nose pointed to the ceiling and pull the opposite shoulder away from their head, lengthening the scalene to their pain fre end range. The partner places their hand just above the stretchers ear and their other hand on the stretchers shoulder to anchor it. The stretcher should then attempt to push against the partners hand, making sure they do not rotate their head whilst doing this. Also make sure the stretcher does not lift their shoulder. After this stretch the stretcher should relax and inhale deeply. On the exhale the stretcher should try to extend their neck further, once again making sure their nose is pointed to the ceiling.
Information obtained from McAtee, R. & Charland, J. (1993) Facilitated Stretching
Images from www.wikipedia.com