Ready for more time on the jaw and mouth? For many people with high-stress positions or situations, the jaw holds in the stress that can’t be seen by others. Sometimes people grind their teeth at night. Other times they clench their teeth during the day, causing extreme tension that can lead to TMJ disorder, tooth pain or mouth/jaw soreness and aches. While it’s hard to break the habit, there is proactive work you can do on yourself or on your partner in order to relieve the tension that builds up there.