Guide
Where your jaw is supposed to rest
Lips together, teeth apart, tongue on the roof of your mouth. That's the default your jaw should return to — and most people who clench have lost it. Here's how to find it again, and what to do the moment you catch yourself.
As Seen In
Why it happens
The jaw is where you feel it. It isn't where it starts.
Your jaw doesn't decide to do this. Your nervous system does — mostly without asking you first. It isn't your bite. It isn't weak willpower. And it's never one thing.
- Stress & emotionThe best-established piece — for daytime clenching. At night it colours the picture rather than flipping the switch.
- Sleep & breathingMost of the night's activity clusters in lighter sleep, around the moments your brain briefly surfaces.
- Daytime loadEight hours of quiet bracing at a desk doesn't politely clock off at bedtime.
- What you drink & takeAlcohol, caffeine, nicotine and some medications are all associated with more jaw activity.
- GeneticsSome of this simply runs in families. It isn't something you did.
- Posture & habitsWhere your head, neck and tongue sit changes what the jaw is quietly asked to hold.
Single-cause fixes keep disappointing people for the same reason. Fix the bite, manage the stress, buy the guard — each aims at one input and hopes it was the one. We'd rather measure the thing they all end up in.
The research behind thisCore Techniques
4 ways to relax your jaw
These techniques work together. But they only work on a clench you've noticed.
01
Lips Together, Teeth Apart
The ideal resting position: lips gently closed, teeth slightly apart, tongue resting on the roof of your mouth. Practice this throughout the day.
02
Awareness Training
You can't relax what you don't notice. Check-ins through the day teach you to catch the clench.
03
Progressive Muscle Relaxation
Deliberately tense your jaw muscles for 5 seconds, then release completely. The contrast helps your brain recognize true relaxation.
04
Breathing & Relaxation
Slow, diaphragmatic breathing activates your parasympathetic nervous system and naturally reduces jaw tension.
That's all four, and none of them need us. The hard part isn't the technique — it's remembering to check, hundreds of times a day, when the whole problem is that you don't notice.
When relaxing it isn't the answer
These techniques are safe. They are not the right tool for everything.
- A jaw that locks, catches or won't open fully
- Pain that is getting worse rather than settling
- Swelling, heat, or pain with a fever
- Numbness or pins and needles in the face
- Sudden onset after a knock to the jaw or face
Any of those is worth a dentist, doctor or physiotherapist. We don't diagnose, and this page isn't a substitute for someone looking at you.
The Jaw Behaviour Quiz
Two minutes to a clearer picture of what your jaw is doing.
Fourteen questions about your days, your nights and what you put into them — and a read on where yours points. A starting point, not a diagnosis.
14 questions · about 2 minutes · free, no account needed
Do you wake up with a tired, stiff or sore jaw?
- Most mornings
- Sometimes
- Rarely or never
Get my result
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Frequently Asked Questions
How do I relax my jaw right now?
Why can't I keep my jaw relaxed?
Does jaw relaxation help with grinding at night?
Should my teeth touch when my jaw is relaxed?
Related guides
The JawSense app
Check-ins at random moments
The JawSense app checks in with you at random moments through the day, asking: "Is your jaw relaxed right now?" Answer often enough and you start noticing before the app asks.
Scan to get the appFree · iOS & Android · works without the device
Or start with the 2-minute jaw quiz
“The check-ins made me realise I was clenching all day at work. Now I catch myself and let go of it. My awareness has completely changed.”
