Muscles worked
What the bird dog trains
Tap a muscle to see just that one and what it does in the lift.
Before the first rep
How to set up
- 01
Get on all fours. Kneel on a mat with your hands flat under your shoulders and your knees under your hips, about hip width apart.
- 02
Flat back. Find a neutral spine: not rounded up like a cat, not sagging. Your back should be flat enough to balance a cup on it.
- 03
Head in line. Look at the floor just ahead of your hands so your neck stays in line with your back. Do not lift your chin to look forward.
- 04
Light brace. Tighten your stomach gently, a light brace well short of your hardest, and push the floor away so your shoulders do not sag. Keep breathing.
Step by step
How to do the bird dog
- 01
Reach the leg back. Slide one foot straight back along the floor, then lift it until your leg is level with your hips. Squeeze that glute and push through your heel.
- 02
Reach the opposite arm. At the same time, reach the opposite arm straight forward to shoulder height, thumb pointing up. Think long, not high.
- 03
Hold still. Hold for at least a second, and up to about 10 seconds as you get steadier. Your hips stay square to the floor and your lower back does not change shape.
- 04
Return to all fours. Bring the hand and knee back down under you slowly, with control, until you are back in the starting position.
- 05
Switch sides. Repeat with the other arm and leg. Alternate sides, or do all reps on one side before switching, keeping the count even.
Cues to say in your head
- Reach long, not high
- Hips stay square
- Flat back
- Push the floor away
- Heel back, thumb up
- Slow and still
Fix these first
Common mistakes
Lifting the leg too high
Stop when the leg is level with your hips. Going higher arches your lower back, which is the opposite of what the drill trains.
Hips tipping open
Keep both hip bones pointing at the floor. Imagine a cup of water on your lower back that must not spill; if it tips, shorten the reach.
Rushing or swinging the limbs
Move slowly and pause at the end. The value is in holding still, not in how many reps you do.
Sagging into the supporting shoulder
Press the floor away with the hand that stays down so your chest stays lifted and your weight stays centered.
Craning the head up
Keep your eyes on the floor just ahead of your hands so your neck stays in line with your spine.
Holding your breath
Breathe slowly through the hold while keeping the light brace. If you cannot breathe, you are bracing too hard.
Stay safe
The bird dog is low load, and failing a rep just means putting your hand or knee back down. Use a mat or folded towel if kneeling bothers your knees, and try fists with your knuckles down if your wrists complain. Stop if you feel sharp pain, pain that travels down a leg, or numbness or tingling. If you have a back injury or ongoing back pain, get a physical therapist or doctor to clear and guide your exercise choice.
Programming
Sets, reps and how much weight
| Goal | Sets | Reps | Load | Rest |
|---|---|---|---|---|
| Technique | 2 to 3 | 5 to 6 per side, 2 to 3 second holds | 30–50% 1RM | 30 to 60 sec |
| Endurance | 2 to 3 | 2 to 6 per side, 8 to 10 second holds | 50–65% 1RM | 30 to 60 sec |
| Stability | 3 | 5 to 8 per side, 5 second holds | 60–70% 1RM | 45 to 90 sec |
Plan your next session
Put in a recent set. You get working weights for your goal, a warm-up and the plates to load.
Estimated 1RM 216 lb
Endurance sets
108–140lb
2 to 3 sets of 2 to 6 per side, 8 to 10 second holds reps, 30 to 60 sec rest. Build time under control. Many coaches use a descending pattern across sets, such as 6, then 4, then 2 reps per side, so form stays sharp as you tire.
Estimates use the Epley formula and work best from sets of 3 to 8 reps. Treat them as a starting point and adjust by how the first working set moves.
Questions
Bird Dog questions
What muscles does the bird dog work?
Mainly the muscles along your spine and your glutes, with your abs and obliques bracing to stop your trunk from twisting. Your shoulders and upper back work too, holding up the reaching arm and the supporting arm.
Is the bird dog good for lower back pain?
It is one of the most common exercises in low back programs because it trains the trunk to stay steady with relatively little load on the spine. It is not a treatment on its own, so if you have back pain, follow the guidance of a physical therapist or doctor and stop if it makes symptoms worse.
What is good bird dog form?
Hands under shoulders, knees under hips and a flat back, then reach the arm and opposite leg out only until they are level with your body. Your hips should stay square to the floor and your lower back should not arch or twist.
How long should you hold a bird dog?
Hold each rep for at least a second, building up to about 10 seconds. Several short, steady holds tend to work better than one long hold where your form fades.
How many bird dogs should I do?
Two to three sets of 5 to 8 slow reps per side covers most goals, whether as a warm-up or core work. If you hold each rep for 8 to 10 seconds, fewer reps per set is enough, and keep the count the same on both sides.
Why do my hips tip when I do a bird dog?
Usually the leg is going too high or the brace has gone soft. Lower the leg to hip height, tighten your stomach lightly and slow down; if they still tip, practice lifting only the leg or only the arm first.
Train in Protocol
Log your bird dog by voice. Protocol tracks the rest.
Your last session shows up before every set, warm-ups and plates are worked out for you, and your coach sees every lift next to your sleep and recovery.