Every once in a while someone will wake up with a lot of neck pain and a loss of motion in one direction.
They won't be able to turn their head one way and will feel that their muscles are in a spasm.
This is called an acute facet based/locked wry neck.
But another option that may provide immediate results is dry needling.
In fact, a recent study showed immediate and long term improvements in pain and range of motion after just 12 minutes of dry needling.
So next time you wake up with a funny neck, find a physical therapist that does dry needling.