Core training isn’t just about strength, it’s about teaching your body how to move efficiently. The bird-dog is a standout exercise that builds spinal stability, reinforces good posture and enhances coordination, all without placing excessive load on the spine.

Often called the quadruped opposite arm and leg raise, it’s widely used by strength coaches and rehab professionals.

What sets it apart is that it helps stabilize the trunk. By lifting the opposite arm and leg while maintaining a neutral spine, the bird-dog recruits deep stabilizers like the multifidus, longissimus and iliocostalis while also activating the hip extensors and the gluteus maximus and minimus.

More than a basic exercise, the bird-dog is an excellent core move, teaching you the ability to move the hips and shoulders independently while maintaining a stable, neutral spine.

Now move this exercise to a pilates reformer machine—with no springs.

Removing the springs adds an element of instability, requiring your core and spine stabilizers to work harder to maintain control. The moving platform challenges your ability to maintain alignment under shifting conditions. Every lift and reach of the arm and opposite leg demands locking the spine on the pelvis and fully extending the hip. Your core has to work harder to maintain balance and alignment, turning this into a highly effective core exercise.

By eliminating assistance from the springs, you shift the demand entirely to stabilizing muscles.

This variation is challenging, innovative and engaging—a core endurance exercise you need to try!

Published July 4, 2025 https://www.mtexpress.com/wood_river_journal/features/fitness-guru-supercharge-your-core/article_96b7ed7d-4f87-4b74-9649-27cc20d0474a.html