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Strengthening your core involves more than just crunches and planks. Your core spans all the muscles of your torso, and to make it stronger, you need to take a comprehensive approach. A strong core is integral to much more than simply being able to do sit-ups.
A weak core can cause a range of problems, limiting your physical potential and leaving you vulnerable to injury. It’s important to recognize the value of a strong core for both daily movement and athletic performance.
I recently attended a TRX class, where most of the exercises require you to maintain a steady core while manipulating the suspension trainer. It’s an intense, full-body workout. However, there was one person in the class who, despite his efforts, struggled to keep his core engaged. His back sagged during pushups, and his rows turned into ineffective crunches. This lack of core control meant he wasn’t getting the maximum benefit from the workout.
A strong core is essential for runners and swimmers, as it helps stabilize your body during each stride or stroke. Your torso’s stability plays a key role in controlling your arms and legs, whether you're swimming through water or maintaining balance while running. Without a solid core, your performance in these activities will suffer.
When I played roller derby, having a strong core was crucial to delivering effective hits. To push someone with your shoulder, your whole body must be solid from your legs to your torso. Even if you’re not body-checking, a lack of core strength can leave your upper body uncontrolled, which compromises your balance and impact.
Even if you're not in a contact sport, a powerful core is vital for everyday tasks. Whether you’re moving furniture, shoveling snow, or hauling a flailing child out of a store, strong core muscles protect your back and help you power through with ease (trust me, I know how that feels!).
Without a solid core, your gym efforts will fall short. Your pushups and deadlifts will suffer, and your posture will worsen. As you age, getting out of bed or rising from a chair becomes harder, and you'll be more susceptible to falls. The stronger your core now, the more resilient you’ll be as time goes on.
Understanding what your core truly is is the first step towards strengthening it. It’s not just about abs—it’s the central powerhouse that connects your upper and lower body, affecting your movement, balance, and stability.
Many people mistakenly equate the 'core' with the six-pack muscle in the front of the belly, called the rectus abdominis. Sure, you can feel this muscle tightening during crunches, but does that really prepare you for real-life movements? Bending forward with force isn’t something we typically need to do. However, when the rectus abdominis works in coordination with other core muscles, it plays a vital role in stabilizing your body in various positions.
This is why planks are more effective than crunches: when performed correctly, planks engage all your core muscles at once (plus your arms and legs, adding a full-body challenge). Each muscle works together, resisting the others to create a sturdy, rock-solid core. It's similar to scenarios we encounter in real life—whether you're holding your ground against a hip check, carrying a squirming child, or pushing a heavy door, your core is essential for maintaining stability.
While planks and crunches are staples, there are countless other ways to target your core. Let's dive into which specific muscles we're aiming to strengthen.
The rectus abdominis helps bend your body forward at the waist.
The erector spinae, or back extensors, run along your spine, and they allow you to bend backward at the waist.
The internal and external obliques are two muscle layers that wrap around your waist. Their diagonal muscle fibers assist in twisting movements.
The transverse abdominis is the muscle responsible for drawing in your stomach. Think of it as your body’s natural weightlifting belt—it supports and stabilizes your spine.
The multifidi are a series of muscles that link the bones of your spine together.
The quadratus lumborum lies deep in your abdomen and connects your pelvis to your spine.
Some trainers extend the definition of your 'core' to include nearby muscles, such as those in your hips and upper back. For instance, your iliopsoas muscles connect your spine to your legs and help bring your thighs toward your torso. You engage these muscles during movements like sit-ups.
How to Strengthen Your Core from All Angles
With so many muscles at play, it's clear that relying solely on crunches won’t cut it. The good news? Almost any full-body movement can engage your core if done correctly. Push-ups, pull-ups, and even swinging a sledgehammer at a tractor tire all activate your core. Here’s a guide to recognizing some of the most effective moves for core strength:
Stabilize your core. This applies to planks, push-ups with proper form (where your body remains in a straight line the entire time), and inverted rows as shown in the video above.
Use one arm or one leg to challenge your core as it adjusts to the uneven forces. Deadbugs and bird dogs are perfect examples.
Hold a weight on one side of your body to amplify the single-arm or single-leg challenge. For example, performing dumbbell rows or presses with one arm forces your core to engage to prevent you from tipping over. For an even more extreme variation, try the Turkish get-up or one-sided farmer's walks.
Twist your body to perform the movement. A classic example of this is a woodchopper, where a dumbbell or cable machine mimics an axe’s weight, pulling it diagonally across your body. You can also try a Russian twist (with or without a medicine ball) as a great alternative to sit-ups.
Use an unstable surface. Instead of planking on your forearms on the floor, try placing them on a medicine ball, exercise ball, or bosu for an added challenge.
By incorporating these movements into your routine, you won’t need to set aside a whole day or specific portion of your workout just for core training. Your core will naturally be engaged alongside the rest of your body as you perform large, functional exercises. If you prefer focusing on isolated muscle groups, that’s completely fine—but be sure to dedicate some time to working your core in different ways.
