A chin tuck looks like nothing: a small nod that gives you a slight double chin. It is one of the most prescribed exercises for neck pain and forward head posture, and most people do it wrong at first.
The muscles behind the nod, and why they weaken
Two thin muscles run along the front of the neck, deep behind the throat: longus colli and longus capitis, the deep cervical flexors. They steady each segment while bigger surface muscles such as the sternocleidomastoid swing the head around.
Gwendolen Jull and colleagues developed the craniocervical flexion test: you lie on your back with a pressure sensor behind the neck and nod gently through five stages. Their 2008 review in the Journal of Manipulative and Physiological Therapeutics summarised the findings: people with neck pain use less of the deep flexors and more of the surface flexors, and the deep flexors tire sooner.
What training them does
- A 2018 systematic review of 12 trials (Blomgren and colleagues, BMC Musculoskeletal Disorders): strong evidence that deep flexor training improves neuromuscular coordination and head posture, little effect on strength at higher loads.
- A 2020 meta-analysis of 10 trials (Tsiringakis and colleagues, Musculoskeletal Science and Practice): small extra gains in pain and disability compared with neck strengthening.
- In short: chin tucks retrain control, not raw strength.
Nod, do not shove
A chin tuck is a nod, not a shove. The chin drops slightly toward the throat, like a tiny yes, and the back of the neck lengthens. Ramming the whole head straight back is retraction, a different movement that uses the bigger muscles and skips the deep flexors.
Lying down, then sitting
- Lying: on your back, knees bent, a thin towel under the head if your chin points up. Keep the head resting and nod gently until the back of the neck feels long.
- Sitting: sit tall, eyes level. Same small nod, then let the head glide back a touch so the ears stack over the shoulders.
- Hold: many programmes start around 5 seconds and build toward 10 second holds, about 10 times. Your therapist sets the dose.
Mistakes that change the exercise
- Clenching the jaw or pushing the tongue into the roof of the mouth.
- Cords tightening at the front of the neck. That is sternocleidomastoid taking over: make the nod smaller.
- Lifting the head, holding your breath, or shrugging the shoulders.
Progressing to a head lift
Once you can hold the nod for 10 seconds, ten times, without the surface muscles jumping in, your therapist may add a head lift: keep the tuck, raise the head a centimetre or two, hold briefly. This is where strength begins, and where people lose the tuck.
If posture is part of your plan, see our exercises for rounded shoulders
Doing chin tucks in a guided session
Because the movement is tiny and substitution is easy, feedback matters. In a KineTrue session the camera tracks head and shoulder position, so the recorded results show whether the head stayed back and shoulders stayed down, and your therapist can adjust the dose if the pattern slips.
Stop and check with your therapist or doctor if chin tucks bring on dizziness, headache, or pain or tingling into an arm. Neck pain after a fall, or with weakness or numbness, needs assessment first.