Always fall asleep is generally believed to be related to sleeping pillows and sleep posture, the neck is not done to keep warm measures can also fall asleep. Pillow fall is often manifested in the morning with severe neck and shoulder pain, accompanied by limited movement. Its etiology and pathogenesis is not clear, it is currently believed that and sleep pillow related, sleep pillow is too high, too low or too hard will lead to the neck in the over-extension or flexion state, thus causing muscle spasm and strain. Secondly, improper sleeping position at night may also lead to excessive local muscle deflection, sprain. It should be noted that some people fall asleep is also related to improper warming measures, the neck is cold at night, the local blood circulation is affected, there will also be stiffness and pain, restricted movement and other symptoms. For the people who always fall asleep, you can consider replacing the pillow with the right height, and pay attention to the sleeping posture when you sleep. At the same time, do a good job of warm measures to avoid localized cold.