Computer users who frequently tilt their heads back can prevent frozen shoulder.

　　First, look up at the sky. Stand upright with your arms hanging down and your feet shoulder-width apart. Slowly raise your head and look up at the sky, maximizing the angle of your gaze. Keep your eyes fixed on a target and hold this position for about 15 seconds.

　　Next, massage your neck. Stand or sit upright, and use your thumbs to massage the back of your neck, first massaging the middle part, then the muscles on both sides, from top to bottom and from bottom to top, repeating 15 times.

　　Then, glare fiercely. Support yourself with your hands and feet, arching your body. Then, turn your neck and look back, glancing left and right 15 times each. The key is to focus on turning your neck when glancing left and right, not just your eyes.

　　Fourth is head shaking. Shake your head forward, backward, left, and right in sequence. Shake your head in this way for a full circle, then shake it in the opposite direction. Do this 10 times to the left and 10 times to the right.

　　Finally, use opposing forces. Interlace your fingers and place your palms behind your neck. Push your neck forward while simultaneously straightening your neck backward; the two forces are in opposite directions. At the same time, turn your head left and right five times. Relax, pause for a moment, and then repeat.