Whether in the subway, supermarket, restaurant, or park, you can see the ubiquitous "bowing head tribe". Playing with mobile phones for a long time makes the cervical spine unbearable, and "phone neck" is currently becoming a new generation of global diseases. Playing with your phone while looking down can lead to cervical spondylosis. Can playing with your phone while looking up solve this problem? Recently, a topic titled "Playing with your phone while looking up can prevent cervical spondylosis" has made headlines, sparking discussion and attention. Regarding this, Lan Chunna, Deputy Chief Physician of the Rehabilitation Medicine Department at Xiangya Second Hospital of Central South University, reminds that any prolonged fixed posture can bring pressure to the cervical spine, including lowering and lifting the head. Long term looking up can lead to excessive stretching of the muscles in front of the cervical spine. Recently, 28 year old Xiao Shang has been watching TV shows, playing games on his phone... After staying up late for several weeks, his cervical spine feels quite stiff. These days, when he was taking photos with his friends, he found that he had some "turtle necks", with his chin extended forward and his neck tilted forward, which was not very beautiful. When searching online, Xiaoshang came across the statement that "playing with mobile phones while looking up can prevent cervical spondylosis". Therefore, he chose to use his phone while lying in bed with his head up. Later, Xiaoshang looked in the mirror and found that his posture had improved. He insisted on looking up his phone every day, but a few days ago, when he woke up, he felt pain in his neck as he slightly rotated. Mr. Li, who is 30 years old this year, is a programmer. He often spends more than ten hours in front of an electronic screen every day. When he comes home at night, he often immerses himself in watching TV shows and playing mobile games to let his brain relax. During Mr. Li's physical examination, the doctor reminded him to pay attention to protecting his cervical spine. Afterwards, he began to look up and play with his phone, while raising the computer screen in the office to maintain a head up position. At first, the posture of looking up did indeed relax the neck and alleviate the pain. However, a few months later, the stiffness in the shoulders, back, and head became even more severe. "Playing with your phone while looking up can indeed help alleviate neck discomfort caused by long-term head bending. However, this does not prevent cervical spondylosis in the long run. If you look up at your phone for too long, it can also cause certain damage to the cervical spine, just like looking down, because any fixed position that lasts too long can bring pressure to the cervical spine," explained Lan Chunna. Long term looking up can lead to excessive tension on the muscles in front of the cervical spine, while shortening the muscles in the back, resulting in weakness. Over time, this may lead to changes in the physiological curvature of the cervical spine, causing excessive pressure behind the cervical spine, resulting in slippage, and even causing tension on the neural structures of the neck, such as the esophagus, trachea, sympathetic nerves, and carotid arteries, resulting in damage. The European Spinal Association has issued a warning that a person's head weighs about 5 kilograms when using mobile phones and computers for a long time. When leaning forward to look at electronic devices such as mobile phones, the tilt angle is 15 degrees, and the cervical spine bears approximately 12 kilograms; The anterior inclination is at a 30 ° angle, and the cervical spine bears a weight of 18 kilograms; The anterior inclination is at a 45 ° angle, and the cervical spine bears a weight of 22 kilograms; When leaning forward at a 60 ° angle, the cervical spine can bear a weight of up to 27 kilograms. "The ideal posture for using a mobile phone should be to keep the eyes level with the screen as much as possible, not to lower or lift the head too much, and not to lower or lift the chin." Lan Chunna reminds that from the perspective of protecting the spine and vision, it is recommended that adults not use their phones for a reasonable amount of time every day