For decades, the fitness world did a pretty good job of convincing us that the core was essentially another word for abs. A strong core meant a flat stomach, visible definition, and probably a heroic number of crunches.
Thankfully, we've learned a lot since then.
Your abdominal muscles are certainly part of your core, but they're only one piece of a much bigger system. Muscles surrounding your abdomen, pelvis, hips, and spine work together to stabilize your trunk, transfer force between your upper and lower body, maintain balance, and support you as you move through everyday life.
Most of that work happens without fanfare. You don't think about your core when you stand up from the couch, carry groceries, reach for something on a high shelf, walk up a flight of stairs, or catch yourself when you trip over the dog's toy. Yet somewhere in the background, muscles are coordinating to keep you stable and help your body move as one connected unit.
Some of the most valuable strength you have is strength you rarely see.
The muscles commonly associated with a six-pack—the rectus abdominis—are only the most visible members of the team. Deeper muscles such as the transverse abdominis, along with the obliques, multifidus, diaphragm, pelvic floor, and other surrounding muscles, all contribute to trunk stability and movement.
Think less "six-pack" and more "360-degree support system."
A functional core needs to do more than help you curl your torso forward. It helps you rotate, resist rotation, bend, breathe, balance, stabilize the spine, and transfer force through the body. That's why a thoughtfully designed core practice can look very different from the endless crunches many of us grew up associating with ab workouts.
And that's good news, because the real benefits of core strength are far more useful than anything you can see in the mirror.
Watch someone hold a steady Warrior III, transition smoothly through a Vinyasa, carry a heavy suitcase, or simply maintain good posture while walking, and you're seeing core strength at work.
A well-functioning core provides a stable base from which the arms and legs can move. This becomes especially important when movement gets more complicated—balancing on one leg, changing direction, lifting something awkward, or moving through a challenging yoga transition.
Core strength also plays an important role in supporting the lower back. Research has found that core stabilization exercises can be useful for improving function and reducing pain in people with nonspecific low back pain. That doesn't mean core work is a cure-all for back issues, but it does highlight an important relationship: when the muscles surrounding the trunk can share the workload effectively, the spine doesn't have to handle every demand on its own.
The goal, then, isn't to create a core that's constantly braced and rigid. It's to develop one that knows when to engage, when to release, and how to respond to movement.
One of the best things about functional strength is that its benefits tend to appear in places where you're not looking for them.
You may notice that balancing poses feel steadier. Your posture may improve without constantly reminding yourself to "sit up straight." You might feel more controlled during a yoga flow or more confident lifting something heavy. Everyday movements can simply start to feel easier.
There's something refreshing about training for that kind of strength. Instead of asking how your body looks, you're asking what it can support, how well it can move, and whether you feel capable inside it.
That's a very different definition of a strong core—and arguably a much more useful one.
Our two new classes this week put that deeper kind of strength front and center, with practices designed to challenge your core while helping you feel supported, energized, and confident.
Maybe it's time to retire the idea that core work is something we do primarily for our abs.
A strong core isn't always something anyone else will notice. There may be no dramatic transformation to photograph and no single pose that proves you've achieved it. Instead, its value reveals itself quietly: in the support beneath your movement, the stability behind your balance, the confidence with which you carry yourself, and the ability to meet physical challenges without giving them much thought.
That's often how real strength works. The most important parts aren't necessarily the ones on display.
They're the ones underneath it all, helping everything else work better.
And that's the core of the matter.