Builds core stability and spinal control through opposite-arm-and-leg extension, training the deep stabilizing muscles to resist unwanted spinal movement — a real, foundational exercise in most spine rehabilitation programs.
This exercise library provides general, educational information based on published clinical guidelines. It does not replace an individualized assessment or prescription from your own doctor or physical therapist. Stop immediately and seek medical evaluation if you experience severe pain, neurological symptoms (numbness, weakness, loss of bladder/bowel control), chest pain, dizziness, or any symptom that feels seriously wrong.
Duration
5-8 minutes
Calories
15-20 kcal
Reps × Sets
8-10 reps each side × 2-3 sets
Rest
30-45 seconds between sets
Benefits
Low back pain (non-specific) Core weakness Post-rehabilitation spine stabilization
1Start on your hands and knees, hands under shoulders, knees under hips, spine in a neutral position.
2Simultaneously extend one arm straight forward and the opposite leg straight back, keeping your hips and shoulders level — imagine a glass of water balanced on your lower back.
3Hold for 2-3 seconds, then return with control to the starting position.
4Repeat on the opposite side.
Breathing: Exhale as you extend arm and leg, inhale as you return to the starting position — do not hold your breath during the hold.
Common Mistakes
Letting the hips rotate or tilt to one side instead of staying level
Arching the lower back excessively as the leg lifts
Rushing through reps without a controlled hold
Safety Tips
Prioritize keeping the spine still and level over how high the arm and leg lift
If balance is difficult, keep the extended limb closer to the floor
Contraindications — Do Not Do This Exercise If
Active cauda equina red flags
Recent lumbar spine surgery, before surgeon clearance for loaded core work
Significant balance impairment without a supervised setting
Stop Immediately If
Sharp lower back pain
New leg pain or numbness during the movement
Progressions
Harder (Progression)
Add a light ankle weight, or hold the extended position for a longer count (up to 10 seconds).
Easier (Regression)
Perform without the arm extension, moving only the leg, or perform in a shorter range of motion.
Scientific Evidence
Bird dog is a well-established core stabilization exercise, commonly included in NASS-aligned rehabilitation protocols for low back pain; dosage here (moderate reps, controlled tempo) reflects standard therapeutic exercise progression rather than ACSM's 2026 general-population strength protocol, since the goal is motor control and stability, not maximal load.¹
One of the first real strengthening exercises I introduce once acute pain has settled — it teaches control before it builds strength. — Dr. Vishal Nigam
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.