This neck flexibility exercise strengthens your neck muscles and helps you maintain better posture. There are 2 parts to this neck stretch. For the first part, sit up straight and be sure your neck isn’t too far forward or backward.
For the second part:
Slowly start to move your head backward: This movement will automatically “tuck” your chin. You should feel a comfortable stretch from your neck to the base of your skull.
Hold this position for 5 seconds. Then, release.
Repeat this exercise 2 to 10 times throughout the day, especially if you sit at a desk all day.