Stretching exercises encourage lengthening of your muscles and associated tendons. Short and tight muscles can lead to pressure on nerves and pain. By its effect of lengthening muscles, stretching promotes flexibility and full range of motion about your joints.
Lower your head towards your shoulder while keeping your face looking forwards
Feel the stretch along the opposite side of you neck
To encourage a bigger stretch, hold onto a chair with your right hand, and gently pull your head down to the left
Repeat on other side