Neck Exercises: Neck Flex
To start, sit in a chair with your feet flat on the floor. Your weight should be slightly forward so that you’re balanced evenly on your buttocks. Relax your shoulders and keep your head level. Avoid arching your back or rounding your shoulders. Using a chair with arms may help you keep your balance:
Rest the back of your left hand against your lower back. Place your right palm on the top of your head.
Gently pull your head forward and down until you feel a stretch in the muscles in the back of your neck. Don’t force the motion.
Hold for 20 seconds, then return to starting position. Switch arms.