What is neck stretch to the diagonal?

Neck stretch to the diagonal

1. Sit in a firm chair, or stand up straight. Look straight ahead. If you're standing, keep your feet about hip-width apart.
2. Turn your head slightly toward the direction you will be stretching. Tip your head diagonally, bringing your chin toward your chest. Relax and let the weight of your head stretch your muscles. Hold this position for 15 to 30 seconds.
3. If you would like a little added stretch, use your hand to gently and steadily pull your head forward on the diagonal. For example, to stretch toward the left, use your left hand.
4. Repeat 2 to 4 times.
5. It's a good idea to repeat these steps toward the other side.