Sadly, mine don't seem to be because of inactivity or sleep. I do a lot of neck exercise and have been getting adjustments from my PT (he's not a upper cervical specialist). I also bought a pillow that has been fantastic, it was one of the sleep number pillows. It's the only pillow I can sleep on without discomfort.

Despite those things, the pain and stiffness and everything else seems completely unchanged. The odd part to me was the fact that I originally had PCS in 2006 but after my car accident these additional symptoms popped up which made me wonder if there's something else contributing to how I feel.