Sleeping without a pillow, caused by the following main considerations: 1, and sleep habits related. If you sleep without a pillow to rest when you are a child, over time will form a chronic habit, adults will develop the habit of sleeping without a pillow. 2, related to certain diseases. The company’s main business is to provide a wide range of products and services to its customers. No pillow rest many hazards, such as long-term cervical compression, can cause cervical spondylosis; head too low resulting in increased blood flow to the cerebral vessels, dizziness, facial swelling and other symptoms. It is best to choose the right pillow when you sleep, the height of the pillow should be a fist height is appropriate.