Core Code is a side-to-side core stability sequence built around one idea: keep your trunk quiet while your limbs do the talking. You’ll start in forearm plank with 10 plank leg raises (glutes firing, hips staying level), then move straight into 10 plank crunches (knee tracking under the body without piking or shifting your shoulders). From there, the emphasis flips to the lateral chain with 10 side bridges to build controlled hip lift strength, followed by a 10-count hold to “lock in” alignment, and then 10 side plank rotations that train your obliques to rotate smoothly while resisting collapse. The key instruction on the page is the whole point of the design: change sides and repeat the sequence, so you’re building symmetry and teaching both sides to stabilize under the same rules, not just the side that feels naturally better.

The benefits here are nerdy in the best way: anti-rotation strength, lateral hip stability, shoulder packing, and midline endurance that carries over to everything that involves bracing and transferring force. The forearm plank work lights up deep abs and hip flexors, but if you keep the leg raises clean it becomes a glute-driven stability drill instead of a lower-back takeover. The side work is where posture starts to look “organized” again: side bridges and side planks recruit obliques, glute med, and the small shoulder stabilizers that keep your scapula from winging when fatigue sets in. Focus on small, deliberate ranges: ribs down, pelvis stacked, neck long, and breathe behind the brace. If you can exhale without sagging or twisting, you’re doing the real version of the workout.