3 Month Supine with Neck Retraction
for Posture, Breathing & Core Control
A DNS-based breathing exercise prescribed by Dr. Dockery that pairs 90/90 positioning with gentle neck retraction — training the deep neck flexors, diaphragm, and core to work together for a tall, stable posture.
What Is the 3 Month Supine with Neck Retraction?
The 3 Month Supine with Neck Retraction — also called 90/90 Breathing with Neck Retraction — is one of the most effective Dynamic Neuromuscular Stabilization (DNS) exercises for improving posture, breathing, and core control. At Life in Motion Chiropractic in Livonia, MI, Dr. Dockery often teaches it to patients dealing with neck tension, forward-head posture, or shallow breathing.
DNS is built on the developmental movement patterns infants use in their first year of life. The “three-month” position recreates the postural control a healthy three-month-old develops on their back — hips and knees at 90 degrees, spine neutral, deep core pressurized. Layering a gentle chin tuck on top of that trains the deep neck flexors at the same time, which is exactly the system that switches off when we spend all day looking down at screens.
The payoff is a body that knows how to hold itself tall: better diaphragmatic breathing, a more stable spine, and less of the upper-back and neck tightness that comes from poor posture.
Step-by-Step: Neck Retraction in 90/90
Set up in 90/90
Lie on your back with your knees and hips bent at 90 degrees, forming an “L” shape. Feet can rest on a wall, chair, or be supported in the air.
Flatten the low back
Gently press your lower back toward the floor to engage your core and stabilize the spine — no gripping, just a quiet connection.
Retract the chin
Tuck your chin slightly and lengthen the back of your neck — imagine making your neck as long as possible without lifting your head off the floor.
Breathe into the ribcage
Inhale slowly through your nose, expanding your lower ribs and abdomen rather than lifting your chest. Exhale fully, keeping the back flat and neck long.
Repeat with control
Continue for 5–10 deep, smooth breaths, holding the retracted neck and stable spine throughout.
The chin tuck is subtle — think “nod yes” a few millimeters, not “crush a chin into your chest.” If you feel the front of your throat straining or your head lifting, you’ve gone too far. The goal is a long neck and an easy breath at the same time.
Who Benefits From This Exercise?
Forward-head posture
Directly targets the deep neck flexors that weaken with all-day screen and phone use.
Shallow breathers
Retrains low, diaphragmatic breathing instead of shallow chest-and-shoulder breathing.
Neck & upper-back tension
Eases chronic tightness across the shoulders and upper back by restoring better alignment.
What to Watch For
- Over-tucking the chin. Forcing the chin down strains the throat. Keep the retraction gentle and the neck long.
- Lifting the head off the floor. This is a lengthening cue, not a crunch. The head stays down.
- Chest breathing. If your shoulders rise toward your ears on the inhale, redirect the breath low into the ribs and belly.
- Arching the low back. Losing the flat-back connection means the core has switched off — reset before continuing.
Frequently Asked Questions
A set of 5–10 controlled breaths, once or twice a day, works well for most people. It’s a quality-over-quantity drill — slow, smooth breaths with a steady neck beat rushed repetitions.
Standard 90/90 Breathing trains the diaphragm and deep core in the supported position. Adding neck retraction brings the deep neck flexors into the same pattern, making it especially useful for neck tension and forward-head posture.
You should feel a gentle engagement at the front of the neck (the deep flexors) and a quiet, supportive core. You should not feel straining in the throat or the larger muscles on the side of your neck — that’s a sign the retraction is too forceful.
Forward-head posture and tight upper-neck muscles are common contributors to tension-type headaches. Restoring deep neck flexor control can be part of the picture, though headaches have many causes — worth discussing what’s driving yours specifically.
It’s low-load and done lying down, which makes it a gentle option for many people with neck tension. If your pain is sharp, recent, or radiating, it’s best to have it assessed in person before adding any neck exercise.
The video is a solid reference, but the chin tuck is easy to overdo. A quick in-person check makes sure you’re activating the deep neck flexors rather than the surface muscles that are usually already overworking.
This page is for educational purposes and is not a substitute for individualized medical advice. Consult Life in Motion Chiropractic or your healthcare provider before starting any new exercise.
Want this checked in person?
Dr. Dockery serves patients throughout Livonia, Farmington Hills, Redford, Plymouth, and the greater Wayne County area. We’ll make sure you’re performing the neck retraction correctly and build a plan around your posture and breathing goals.