Why does my neck feel stiff and sore after sleeping without a pillow?

Why does my neck feel stiff and sore after sleeping without a pillow?

1. Introduction Sleeping without a pillow forces the cervical spine out of its natural neutral alignment, dropping the head backward or to the side and placing the paraspinal muscles into a state of sustained isometric tension. This prolonged mechanical distortion restricts blood flow to the neck muscles, resulting in localized ischemia, cellular fatigue, and the … Read more