Exercise library
Bird Dog
How to do the bird dog with proper spinal position, why most people turn it into a back extension, and how to progress it once it gets easy.
How to do the bird dog
- 01Start on all fours with hands under shoulders and knees under hips.
- 02Set a neutral spine — a long line from the crown of your head to your tailbone.
- 03Extend your right arm forward and left leg back until both are parallel to the floor.
- 04Hold for two seconds without letting your hips rotate open.
- 05Return under control and switch sides.
Coaching cues
- Reach long rather than lifting high. Height is not the goal.
- Keep hips square — imagine balancing a glass of water on your lower back.
- Tuck your chin slightly so your neck stays in line with your spine.
Common mistakes
FaultLifting the leg above hip height
FixThis arches the lower back. Stop at parallel — the glute is fully engaged there.
FaultHips rotating open
FixThe anti-rotation demand is the point. Reduce the reach until you can keep hips level.
The bird dog trains one thing: keeping your spine still while your arms and legs move. Everything else about it is incidental.
How to do it
Set a neutral spine on all fours, then reach one arm forward and the opposite leg back until both are level with your torso. Hold, return, switch.
The mistake almost everyone makes
Lifting the leg higher than the hip feels stronger and looks better. It is neither. Past parallel, the movement stops coming from the glute and starts coming from the lower back — which is the exact motion the exercise exists to prevent.
Common questions
What is the bird dog good for?
It trains the core to resist rotation and extension while the limbs move — the exact demand of walking, running and carrying. It also teaches hip and shoulder dissociation from a stable trunk.
How long should I hold a bird dog?
Two to five seconds per rep for six to ten reps per side. Longer holds shift the exercise toward endurance without improving the control you are after.
Swap it out
Same training effect, different demand on the joints.