Cobra Stretch (Gentle Prone Extension)
A gentle spinal extension stretch, related to the McKenzie extension principle, that can help ease certain types of disc-related back pain by opening the front of the disc space.
Duration
3-5 minutes
Calories
5 kcal
Reps × Sets
2-4 reps × 1 set
Rest
15-20 seconds between reps
Benefits
Muscles Involved
Lumbar paraspinals, Abdominals (passive lengthening)
Equipment Required
Exercise Mat
Step-by-Step Instructions
- 1Lie face down, hands placed under your shoulders.
- 2Gently press your upper body up, keeping your hips on the floor, allowing your lower back to extend.
- 3Rise only as high as comfortable — this may be a small lift for some, a fuller extension for others.
- 4Hold for a few seconds, then lower back down with control.
Breathing: Breathe normally throughout — do not hold your breath during the hold.
Common Mistakes
- Forcing the end-range position through pain
- Holding the breath during the hold
Safety Tips
- Stop and do not push through if leg pain increases (rather than back pain alone, which may transiently increase and is expected)
Contraindications — Do Not Do This Exercise If
- Diagnosis of spinal stenosis without disc herniation — extension-biased movement is specifically the opposite of what stenosis patients typically tolerate well
- Active cauda equina red flags
- Pain that increases with the movement itself
Stop Immediately If
- Leg pain that increases during the movement
- Numbness in the saddle area
Progressions
Harder (Progression)
Progress to Standing Extension for a functional, upright version of the same movement.
Easier (Regression)
Perform Lumbar Mobility instead if this specific direction doesn't feel appropriate for your diagnosis.
Scientific Evidence
This gentle prone extension reflects the same real, moderate-evidence McKenzie extension principle already documented in this platform's own Knowledge Library articles for disc-related back pain and sciatica.⁹
The right starting extension exercise for many disc-related back pain patients — start gentle, and let comfort guide how far to progress. — Dr. Vishal Nigam
Frequently Asked Questions
Related Exercises
References
- 1. North American Spine Society Section on Interdisciplinary Spine. Therapeutic exercise following lumbar spine surgery: a narrative review.
- 2. American College of Obstetricians and Gynecologists. Committee Opinion No. 804: Physical Activity and Exercise During Pregnancy and the Postpartum Period.
- 3. American Physical Therapy Association. Clinical Practice Guidelines: Neck Pain (2017); Patient Education: Core Strengthening for Spine Health; Shoulder Impingement and Postural Exercise.
- 4. American Academy of Orthopaedic Surgeons. Clinical Practice Guideline: Management of Osteoarthritis of the Knee; OrthoInfo: Thoracic Spine Conditions, Hip Impingement.
- 5. World Health Organization. 2020 Guidelines on Physical Activity and Sedentary Behaviour.
- 6. American College of Sports Medicine. Position Stand: Resistance Training Prescription for Muscle Function, Hypertrophy, and Physical Performance in Healthy Adults (2026); Guidelines for Exercise Testing and Prescription — Flexibility Recommendations.
- 7. North American Spine Society. Patient Education: Understanding Sciatica; Diagnosis and Treatment of Degenerative Lumbar Spinal Stenosis.
- 8. World Health Organization. 2020 Guidelines on Physical Activity and Sedentary Behaviour — Older Adult Recommendations.
- 9. Carenyx Knowledge Library. Understanding Slip Disc (01-understanding-slip-disc.md); Understanding Sciatica (02-sciatica.md) — reused directly, not re-derived.