A complementary exercise is to work the muscles that open your jaw. Once your jaw is in a relaxed position, try to open your mouth while keeping your tongue on the inside of your front teeth. You should feel a pull underneath your tongue. Hold for a few seconds, then repeat 10 times. Try to do this up to six times a day. It helps to do this a few times a day to release the tension in your jaw, so set a reminder on your phone or watch to do this relaxation exercise.
Another exercise is one you can do just after you brush your teeth twice a day, according to the Camberwell Osteopathic Clinic. Using your middle fingers, trace the line at the top of your jaw until you find a hollow just in front and below your ears. It might feel tender there. While keeping your tongue at the back of your front teeth, press gently into this hollow as you slowly open and close your mouth. Repeat 10 times.