The powerhouse: why the core is at the heart of Pilates

In Pilates, one word comes up again and again: the powerhouse, or core. Joseph Pilates considered this area the source of all strength and movement. Understanding and strengthening your core is the key to getting the most out of your Reformer Pilates practice, and to feeling stronger every day.

What is the powerhouse?

The powerhouse refers to all the muscles that surround and stabilize the pelvis and lower spine. You can picture it as a cylinder running from the ribs to the hips. It includes:

• the transverse abdominis, the deepest abdominal muscle, which acts like a natural belt;
• the obliques, which control rotation and lateral stability;
• the deep back muscles, such as the multifidus;
• the pelvic floor, at the base of the pelvis;
• the glutes, which stabilize the hips;
• the diaphragm, at the top, which connects the core to breathing.

Why is the core so important?

Every everyday movement starts from the core: getting up from a chair, carrying a child, climbing stairs, running, lifting a suitcase. A strong, coordinated core protects the spine, improves balance and lets the arms and legs move with more strength and freedom.

Conversely, a weak core forces other muscles to compensate. The neck, shoulders and lower back become overloaded, which can lead to tension, poor posture and pain. That’s why core strengthening is often recommended to prevent back pain and improve posture, as we explain in our article on Pilates and posture.

A strong core isn’t just visible abs

Many people associate the core with the “abs” they can see. Pilates first works the deep muscles, invisible from the outside but essential for stability. Repeated sit-ups are not enough: you need to learn to engage the core in a controlled way, coordinated with breathing, while the arms and legs move.

How Reformer Pilates strengthens the powerhouse

On the Reformer, almost every exercise engages the core. The moving carriage creates instability the body must control. Whether you push the bar with your feet, pull the straps with your arms or hold a plank on the carriage, your core works to keep the pelvis and spine stable. The springs let you fine-tune the challenge, so you progress without compensating.

Engaging your core: the right feeling

Engaging the core doesn’t mean sucking in your stomach as much as possible or holding your breath. It’s rather a gentle, continuous engagement: imagine drawing your navel slightly toward your spine as you exhale, while keeping your breathing fluid. Your instructor will help you find this feeling, which becomes natural with practice.

Benefits of a stronger core

• Less tension in the lower back.
• Better posture standing and sitting.
• More balance and coordination.
• A flatter stomach and a more defined waist.
• More power in sports and everyday movements.

Working your core in a small group or semi-private

Small-group classes are perfect for strengthening the core progressively. If you want even more precise corrections, practicing as a pair in a semi-private class helps you better understand core engagement thanks to the instructor’s closer attention.

A lasting investment

Strengthening your powerhouse is investing in a stronger body for years to come. Browse our options on the Pricing page, choose the one that matches your pace and come feel the difference at the studio in Laval.