ach my neck!

cg57 100If anyone knows the science behind why necks get all thrown out of whack at night time, even when the sleep is exactly the same as the incredibly restful one the night before, you should let me know.  I need to know how to fix my neck, it hurts.  agh, how it hurts.
Hope everyone is having a nice friday!  Christmas time was good to everyone?  I hope so.  Peace out!