According to one 2010 study published in the Journal of Dental Research, performing TMJ exercises increases mouth opening range more than using a mouth guard in people with TMJ disc displacement. These nine exercises from the American Academy of Family Physicians (AAFP) and the Royal Surrey County Hospital may help relieve TMJ pain and improve the movement of your jaw joints. For some exercises, there are frequency recommendations. For exercises where frequency recommendations aren’t available, ask your doctor or dentist for guidance.