The Core Principles of Building a Strong Core

When most people think about core training, they immediately picture endless planks and crunches aimed at carving out a six-pack. But at Jacked and Jilled, we look at the bigger picture.

Your core is an often overlooked but absolutely vital part of strength training. It acts as your body’s foundation of stability. Building a strong, resilient core does far more than just look good in the mirror. It reduces injury risk, dramatically improves your posture, supports overall balance, and assists in transferring power throughout your entire body during heavy lifts.

To help you get the most out of your core training, our coaches put together some essential principles to take your stability to the next level.

1. Practice Core Bracing

Before you move a single muscle under a heavy barbell, you need to master the art of the brace. Bracing is the skill of controlling your breath to create intra-abdominal pressure, effectively turning your torso into an unyielding, stable barrel.

To understand why this matters, picture a simple analogy:

Think of an empty soda can versus a full, completely sealed one. Which one is more difficult to crush? The sealed can resists massive amounts of external force because of its internal pressure.

Creating this internal pressure allows you to readily control your body throughout a wide variety of different, complex movements.

How to do it:

If you're wondering where to start, try this simple cue: Take a deep breath in, then imagine someone is about to punch you square in the stomach. Flex and brace against that imaginary impact, and hold that rigidity through your entire movement.

Just remember: Don't forget to breathe. You’re bracing, not swimming underwater! Learn to maintain that internal tension while taking steady, controlled breaths.

2. Train Anti-Rotation

Your core’s primary physiological job is often to prevent unwanted movement. To build true functional stability, you need to pick exercises that force your core to do the hard work of resisting external forces. This is called anti-rotation training.

By forcing your trunk to stay perfectly still while your limbs move or forces shift, you target and condition what is known as your "deep core,” the hidden musculature that protects your spine.

Add these highly effective anti-rotation and stabilization movements to your routine:

• Farmer Carries (Heavy loaded walks holding weights at both sides)

• Suitcase Carries (Unilateral loaded walks holding weight on only one side)

• Side Planks (Resisting lateral flexion)

• Bear Crawls (Maintaining a rigid torso during quadruped movement)

• Deadbugs (Learning to keep the lower back pinned while moving alternating limbs)

3. Focus on Dynamic Movement

A strong core is, above all, athletic. You must train your body to move fluidly and handle force across multiple directions simultaneously. Moving through space heavily involves your core for both coordination and control. Combining rotation with multi-directional athleticism ensures your strength translates directly to real-world performance and sports.

Incorporate these dynamic exercises into your warm-ups or conditioning blocks to build total-body coordination (and keep your training sessions fun):

• Medicine Ball Tosses (Rotational power production and absorption)

• Side Shuffles (Lateral force management)

• Carioca (Hip dissociation and quick footwork coordination)

4. Challenge Both Flexion and Extension

Basic crunches are a fine starting point, but if you want a robust core, you have to challenge your entire range of motion and progress your training variables.

To maximize your results, focus on two key factors:

• Train in Lengthened Positions: Exercises like GHD sit-ups train your core in deeply extended, lengthened positions. This style of training drastically improves your control and power in larger ranges of motion. This capability transfers directly to just about any real-world movement or heavy lift that relies on your core.

• Add Weight: Just like your chest or legs, your abdominal muscles respond to progressive overload. Adding weight ensures you don’t plateau. It forces your body to continue building force through your entire range of motion, rather than just overworking the shortened, contracted positions typical of standard ab workouts.

Elevate Your Training with Jacked and Jilled

Building a bulletproof foundation takes strategy, consistency, and the right principles. This is only Part One of our Four-Part Core Series written by our team of premier coaches, so check back soon for the next installment.

Contributing authors: 

Zack Stewart, CSCS

McKenna Len, CPT