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Bird Dog

The bird dog extends one arm and the opposite leg from all fours while the trunk fights to stay perfectly still — a rehab-room staple that belongs in every training program. It teaches the spine to hold neutral while the limbs move, which is the exact skill lifting, running, and daily life keep asking for. Coached by Maddy (NASM-CPT) — these are the exact form cues he gives on every client's first week.

Muscles worked

Deep core · transverse abdominis Lower back · erector spinae Glutes · gluteus maximus Rear shoulders · posterior deltoid

Sets & reps by goal

GoalSets × RepsRest
Strength3–4 × 3–6 per side (5 s holds)60–90 s
Muscle3 × 9–12 per side60 s
Endurance2–3 × 18–27 per side45 s

Level — Beginner

Beginner-friendly and worth keeping forever — even advanced lifters warm up with it.

Proper form — 5 cues

  1. Set hands under shoulders, knees under hips, and find a flat, neutral back.
  2. Reach one arm forward and the opposite leg back until both are level with your torso.
  3. Make a fist and squeeze the raised arm — it wakes up the whole limb line.
  4. Keep both hips level with the floor; the pelvis does not roll open.
  5. Hold for a breath, then return with the same control you left with.

Breathing: Exhale as you reach out, breathe steadily through the hold — never brace by holding air.

The 3 mistakes Maddy corrects most

Kicking the leg high above hip height. The lift comes from arching the lower back, not from the glute — impressive-looking, counterproductive. Fix: Stop the heel at torso height; imagine pushing your foot into the wall behind you instead of lifting it.
Hips rotating open as the leg extends. The rotation dodges the anti-rotation work that is the entire reason the exercise exists. Fix: Place a light object on your lower back or film from behind — level hips keep it in place.
Rushing reps like a cardio move. Speed hides every wobble the drill is designed to expose and correct. Fix: Two seconds out, two-second hold, two seconds back — treat each rep as its own event.

Common questions

What is the bird dog actually for?

It trains the deep trunk muscles — multifidus, transverse abdominis, spinal erectors — to keep the spine stable while your arms and legs do things. That is the core's real job in lifting and sport. It is prescribed so often for backs precisely because it loads those stabilisers well while keeping spinal stress low.

Can I do bird dogs every day?

Yes — it is low-load and control-focused, so daily practice is closer to skill work than to heavy training. Many coaches slot a couple of sets into every warm-up regardless of the day's session. If you are using it during a back-pain flare-up, follow the dosage your clinician gives you rather than a blanket rule.

Why do I wobble so much during bird dogs?

Because the exercise is doing its job — narrow base, moving limbs, and a trunk that has been letting other muscles cover for it. Slow down, widen your knees slightly, and practise arm-only and leg-only versions for a week or two. The wobble fading is the progress; there is nothing to be embarrassed about.

Related exercises

Easier: Bird Dog (Modified)  ·  Harder: Bird Dog (Advanced)

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