Forward head posture, or chin poking, frequently occurs as a result of slouching. Slouching will place you in a forward flexed position and your neck will have to compensate so that you can focus on objects in front of you. This posture can cause pain in your neck, upper back or shoulder blade regions, and may contribute to headaches. Many people can develop weakness in muscles in the front of the neck, and tightness in muscles in the back of the neck. Proper ergonomics can help to combat this posture, as can strengthening and stretching exercises prescribed by your physiotherapist.