Understanding the STNR Reflex: Signs, Challenges, and At-Home Activities

What Is the STNR Reflex?

The Symmetrical Tonic Neck Reflex (STNR) is a primitive reflex that typically develops between 6 and 9 months of age and should integrate by approximately 9 to 11 months. This reflex helps babies transition from lying on their stomachs to crawling.

When the STNR is retained beyond infancy, it can affect posture, coordination, balance, attention, and academic skills. Children with a retained STNR may struggle with sitting still, handwriting, reading, and physical activities that require coordinated movement.

How the STNR Reflex Works

The STNR creates a relationship between the movement of the head and the movement of the arms and legs.

When a child's head bends forward:

• Arms bend

• Legs straighten

When a child's head tilts backward:

• Arms straighten

• Legs bend

In infancy, this pattern helps prepare a baby for crawling. However, when it remains active in older children, it can interfere with everyday activities.

Common Signs of a Retained STNR

Children with a retained STNR may:

• Slouch or collapse at their desk

• Prefer lying on the floor when doing homework

• Have difficulty sitting still

• Frequently rest their head on their hand

• Struggle with handwriting

• Have poor posture

• Experience balance and coordination difficulties

• Avoid sports or playground activities

• Sit in a "W" position

• Have trouble copying from the board

• Become fatigued during schoolwork

• Have challenges with eye tracking while reading

How STNR Can Affect Learning

A retained STNR may impact:

Reading

Children may lose their place while reading or find it difficult to track lines of text smoothly.

Writing

Maintaining an upright posture while writing can be challenging. This often leads to messy handwriting and hand fatigue.

Attention

Because so much energy is spent maintaining posture, children may appear distracted, restless, or inattentive.

Gross Motor Skills

Activities such as climbing, running, catching a ball, and riding a bike may be more difficult.

At-Home Exercises for STNR Integration

Consistency is important. Most activities should be practiced for a few minutes daily.

1. Cat-Cow Stretch

This yoga movement closely mimics the natural movement pattern involved in STNR integration.

How to do it:

1. Start on hands and knees.

2. Round the back while looking down toward the belly.

3. Slowly arch the back while looking up toward the ceiling.

4. Repeat 10–20 times.

Benefits:

• Encourages neck-body coordination

• Improves spinal mobility

• Supports reflex integration

2. Rocking on Hands and Knees

How to do it:

1. Begin on hands and knees.

2. Slowly rock backward toward the heels.

3. Rock forward again.

4. Repeat for 1–2 minutes.

Benefits:

• Strengthens core muscles

• Improves body awareness

• Encourages crawling patterns

3. Crawling Courses

Create a simple obstacle course using pillows, tunnels, and cushions.

Ideas:

• Crawl under chairs

• Crawl through tunnels

• Navigate around pillows

Benefits:

• Reinforces natural developmental movement patterns

• Improves coordination and bilateral integration

4. Wheelbarrow Walks

How to do it:

1. An adult gently holds the child's ankles.

2. The child walks forward on their hands.

3. Start with short distances.

Benefits:

• Builds shoulder stability

• Strengthens the core

• Improves postural control

5. Bird Dog Exercise

How to do it:

1. Start on hands and knees.

2. Extend one arm forward.

3. Extend the opposite leg backward.

4. Hold for 5–10 seconds.

5. Switch sides.

Benefits:

• Improves balance

• Develops core strength

• Encourages cross-body coordination

6. Bear Crawls

How to do it:

1. Hands and feet stay on the floor.

2. Knees remain slightly elevated.

3. Move forward slowly.

Benefits:

• Strengthens the entire body

• Improves coordination and motor planning

Helpful Products for Home Practice

Sensory Tunnel

A play tunnel encourages crawling and makes reflex integration exercises fun.

Suggested search:

• Pacific Play Tents Super Duper Tunnel

Amazon:
https://www.amazon.com/s?k=Pacific+Play+Tents+Tunnel

Balance Beam

A balance beam can improve coordination and postural control.

Suggested search:

• Gonge Balance Beam

Amazon:
https://www.amazon.com/s?k=Gonge+Balance+Beam

Therapy Ball

Large exercise balls are excellent for posture, balance, and core-strengthening activities.

Suggested search:

• Trideer Exercise Ball

Amazon:
https://www.amazon.com/s?k=Trideer+Exercise+Ball

Stepping Stones

These help build balance, coordination, and motor planning skills.

Suggested search:

• Gonge River Stones

Amazon:
https://www.amazon.com/s?k=Gonge+River+Stones

Indoor Obstacle Course Equipment

Obstacle courses encourage crawling, climbing, and body awareness.

Suggested search:

• Kids Obstacle Course Set

Amazon:
https://www.amazon.com/s?k=Kids+Obstacle+Course+Set

Yoga Cards for Kids

Yoga activities such as Cat-Cow can support primitive reflex integration.

Suggested search:

• Yoga Pretzels Cards

Amazon:
https://www.amazon.com/s?k=Yoga+Pretzels+Cards

When to Seek Professional Support

If you suspect your child has a retained STNR reflex, consider consulting:

• Occupational Therapists (OT)

• Physical Therapists (PT)

• Developmental Specialists

• Primitive Reflex Integration Practitioners

A professional can determine whether a retained primitive reflex is contributing to learning, attention, or motor difficulties and can recommend an individualized intervention plan.

Final Thoughts

The STNR reflex plays an important role during infancy, but when it remains active beyond its expected timeframe, it can affect posture, learning, coordination, and attention. Fortunately, simple movement activities performed consistently at home can support development and strengthen the foundational skills children need for success.

Remember that progress is often gradual. Small amounts of daily practice can lead to meaningful improvements over time.

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Disclosure

The Amazon links provided in this article are for informational purposes only. Acorn to Tree does not receive affiliate commissions or compensation from purchases made through these links. We recommend products based solely on their potential usefulness for supporting children's development.