Use your thumb of your opposite hand to reach far back into your cheek.
Gently bite to feel the muscle contract, and locate a tender spot.
Gently pinch the muscle and hold the same pressure while your jaw muscles are relaxed.
A typical hold is 60 seconds.
Make sure to use just enough pressure that you feel a stretch, but no pain.
Wash your hands or wear gloves before starting the exercise.
And share this video with someone that needs it.
Do this exercise 1-2x a Day
Remember we CANNOT prescribe specific exercises. So try them all but proceed with caution. If something doesn't feel right don't continue with the exercise.