Core · Anti-rotation
Bird Dogs
The bird dog is a core stability exercise performed on hands and knees, where you extend one arm forward and the opposite leg back until both are level with your torso, hold briefly, then return. It trains the deep abs, back extensors and glutes to keep the spine still while the limbs move, and is a staple of back-health programmes.
Also known as: Bird dog, Quadruped arm and leg raise, Bird dog exercise, Opposite arm and leg raise
- Muscle group
- Core
- Movement pattern
- Anti-rotation
- Type
- Compound
- Equipment
- None, Exercise mat
- Difficulty
- Beginner
What muscles does the bird dogs work?
Primary movers
- Spinal erectors
- Transverse abdominis
- Gluteus maximus
Assisting muscles
- Multifidus
- Obliques
- Gluteus medius
- Posterior deltoid
The bird dog teaches the spine to stay still while the arms and legs move. The deep abs and spinal erectors work together to stop the back arching, rounding or twisting.
Lifting one arm and the opposite leg leaves you supported on two points, so the obliques and gluteus medius must resist the body rotating towards the unsupported side.
The glutes extend the lifted leg, and the shoulder muscles lift the arm. The muscle activity is low enough that the bird dog is easy to recover from and can be done daily.
Research on spine health highlights the bird dog as one of the exercises that challenges the core muscles while keeping spinal load low, which is why it appears in so many rehab programmes.
How to do the bird dogs
Setup
- 1
Kneel on all fours with your hands under your shoulders and knees under your hips.
- 2
Set your spine in a neutral position, neither arched nor rounded.
- 3
Brace your abs lightly.
Execution
- 1
Extend one arm forward and the opposite leg back at the same time.
- 2
Raise them until they are level with your torso.
- 3
Hold for two to three seconds, keeping the hips and shoulders level.
- 4
Return the arm and leg to the start under control.
- 5
Repeat on the other side.
- 6
Keep your gaze on the floor to keep the neck neutral.
Common bird dogs mistakes
Hips rotating
Letting the hip of the lifted leg rise and rotate, which removes the stability challenge.
The fix: Keep both hips level. Imagine balancing a glass of water on your lower back.
Arching the back
Lifting the leg too high so the lower back arches.
The fix: Raise the leg only until it is level with your torso.
Rushing
Moving the arm and leg quickly without a pause, which reduces the stability demand.
The fix: Pause for two to three seconds at full extension.
Looking up
Lifting the head to look forward, which strains the neck.
The fix: Keep your gaze down so the neck stays in line with the spine.
How many sets and reps?
| Goal | Sets | Reps | Load | Rest |
|---|---|---|---|---|
| Core stability | 2–3 | 8–10 per side | Bodyweight, 3 s hold | 45 s |
| Warm-up | 1–2 | 6–8 per side | Bodyweight | None |
| Back health | 3 | 6 per side | Bodyweight, 8–10 s hold | 30–45 s |
Bird dogs are low-intensity and can be done daily as part of a warm-up or a back-care routine. Focus on slow, controlled reps with a pause. Progress by holding longer, adding light ankle weights or drawing the elbow to the knee between reps.
Running the bird dogs in your next block? Hercules logs every set, shows last session's numbers before you lift, and suggests when to add weight.
Get it on Google PlayBird Dogs variations and alternatives
Dead Bugs
AlternativeThe same opposite arm and leg pattern lying on your back, emphasising anti-extension.
Bird Dog Crunch
HarderDrawing the elbow and knee together between reps adds abdominal work.
Plank
AlternativeA static anti-extension hold for core endurance.
Banded Bird Dog
HarderA band around the foot and hand adds resistance to the extension.
Frequently asked questions
What muscles do bird dogs work?
The spinal erectors, deep abs, glutes and obliques, with the shoulders helping to lift the arm. Together they keep the spine stable while the limbs move.
Are bird dogs good for lower back pain?
Yes, they are among the most commonly recommended exercises for back health because they strengthen the core with low spinal load. Get current pain assessed before starting.
How long should I hold each rep?
Hold for two to three seconds for general training, or up to 10 seconds for stability work.
Are bird dogs or dead bugs better?
They train similar stability from different positions. Bird dogs emphasise the back extensors and glutes, while dead bugs emphasise the abs. Both are worth doing.
Can I do bird dogs every day?
Yes. They are low intensity, easy to recover from and make an ideal daily warm-up or movement break.
Hercules tracks every bird dogs you log, shows you last session's numbers before you lift, and flags when your progress stalls.
Get it on Google Play