Exercise.
Here are a few exercises to help you improve your posture and get rid of pain:
- Cobra pose. Lie on your stomach, legs straight behind you, arms along the body and the upper sides of your feet on the floor. Exhale, and slowly raise your head and chest off the floor, using your back muscles but without using your arms. Keep your hips on the floor, and relax your neck. Then slowly go back down, and repeat this exercise three times.