Bird-Dog, The Best Core Exercise Nobody Talks About

Bird-dog trains your core to resist rotation and extension while your limbs move. That's exactly what your core has to do when you're feeding, carrying a car seat, or lifting a toddler out of a cot.

The exercise

Set-up

• Hands and knees on the mat
• Hands directly under shoulders, knees directly under hips
• Spine long, gaze slightly forward
• Ribs gently drawn together (don't let the belly sag)

The movement

1. Inhale to the sides of the ribs
2. Exhale slowly, feel the lower belly gently draw up
3. Extend your right arm forward and your left leg back, until both are parallel to the floor
4. Hold 3 seconds, breathing normally
5. Return with control on an inhale
6. Alternate sides

Do 8 to 10 each side, 2 sets. Daily.

What "right" looks like

• The pelvis stays perfectly level, no rotation
• No arching of the lower back
• The extended arm and leg form a straight line with the spine
• Slow, controlled movement, no wobbling

The two most common mistakes

Mistake 1: extending too high. The arm and leg go above the line of the spine, which arches the lower back. Fix: lower the arm and leg to spine-height only.

Mistake 2: rotating the hips. As one leg lifts, the same hip rises. Fix: place a small object (a coin, a folded towel) on your lower back. If it falls off, you rotated.

Regressions if it feels too hard

• Arm only: lift only the arm, keep both knees down. Then progress.
• Leg only: lift only the leg, keep both hands down.
• Toe-tap: slide the toe back along the floor without lifting.

Progressions once it feels easy

• Slow tempo: 4 seconds out, 4 seconds hold, 4 seconds back
• Add elbow-to-knee: at the return, bring the elbow and knee toward each other under the body
• Bird-dog with a resistance band looped around the extending foot and the extending hand

Why it works

Bird-dog trains anti-rotation and anti-extension, the two things a postpartum core is worst at. It also strengthens the multifidus (deep spinal muscles) that stabilise your lower back, without loading the linea alba.

Do it daily, and within 3 weeks you'll notice you can lift, carry and reach with less back pain and less belly doming.