There’s a reason for this question! I grind my teeth badly. I’ve recently noticed that not only that, but my jaw is clenched pretty much all the time. My facial muscles are actually changing shape because of this.
I’m investigating various solutions but in the meantime …
When you’re at rest, where is your jaw? Where are your teeth? Together or not? Is your mouth closed or open.
I literally can’t find a relaxed position that feels normal. I’m too embarrassed to ask anyone IRL.