One of the simplest ways to do this is to:
Lie down on your back and place a folded (lengthwise) hand towel under the occiput of your head. This is the rear part of your skull that rounds out away from your neck.
Have a friend gently pull the towel straight towards them. Try to get them to hold the position for at least 3 minutes.
Repeat the exercise 2-3 times per-day or until you feel some relief. I have seen excellent results in my own clinic with as little as a few minutes a day.
- See more at: http://breakingmuscle.com/mobility-recovery/3-simple-ways-to-heal-a-stiff-sore-or-injured-neck#sthash.nBmib3kx.dpuf