Walk into a Solidcore class expecting a traditional Pilates session, and you’ll quickly realize you’re not in Kansas anymore. The dim lighting, pulsing music, and intensity of the workout are enough to clue you in: this isn’t your grandma’s mat class. And yet—it’s also not a total departure from Pilates either.
So, what is Solidcore, really? Is it Pilates? Is it strength training? Is it something in between?
If you’ve asked yourself any of these questions, you’re not alone. As someone who’s studied exercise science, talked to instructors across modalities, and (yes) felt my legs shake uncontrollably in a Solidcore session, I’ll break it down for you—clearly, practically, and with just enough nerdy insight to help you make an informed choice for your own body and goals.
Let’s unpack the difference between Solidcore and Pilates—without the jargon, hype, or overgeneralizations—and take a closer look at how each method supports strength, stability, and overall wellness.
What Is Solidcore?
Solidcore (styled [solidcore]) is a high-intensity, low-impact fitness class that combines slow, controlled strength training movements on a resistance-based machine called the Sweatlana (their version of the Pilates reformer).
The brand calls it a “Pilates-inspired” workout—but with a serious twist. Classes are done in a dark room with upbeat music and coaching that feels part bootcamp, part boutique experience. Think: slow tempo, full-body burn, and a whole lot of muscle shaking.
The Basics:
- Classes are 50 minutes
- Focused on time under tension to fatigue muscles
- Utilizes a custom reformer-style machine with springs and cables
- Instructors use hands-on and verbal cues, encouraging near-continuous movement
- Targets smaller muscle groups with slow, intense exercises
What About Pilates?
Pilates, developed by Joseph Pilates in the early 20th century, is a method focused on controlled movement, breath, alignment, and core engagement. It’s often done on a mat or a reformer and can range from gentle rehabilitation-style sessions to intense athletic conditioning, depending on the style.
There are several types of Pilates:
- Classical Pilates follows Joseph Pilates’ original sequencing
- Contemporary Pilates integrates modern biomechanical knowledge
- Fitness-based Pilates may blend in other movement disciplines
No matter the version, the core of Pilates remains the same: control, precision, balance, and breath-driven movement.
So—Is Solidcore Just a More Intense Pilates?
Not quite.
Here’s where it gets interesting: while Solidcore uses the reformer (or a variation of it), the similarities mostly end there. Solidcore is not Pilates in the traditional sense—it borrows the equipment, the focus on core, and the low-impact aspect, but shifts the philosophy completely.
Let’s compare them side-by-side.
1. Training Focus: Control vs. Burnout
Pilates is about intentional control, alignment, and working within your body’s natural range of motion. Movements are often done slowly, yes, but with an emphasis on quality over quantity—and without pushing to muscular failure.
Solidcore, on the other hand, intentionally pushes your muscles to the edge of fatigue. The signature move? Slowing things down to create constant tension, making even tiny movements feel like a monumental challenge. The goal isn’t just strength—it’s failure, in the strength training sense.
In short:
Pilates emphasizes endurance and precision. Solidcore emphasizes fatigue and intensity.
Both are challenging. Just in very different ways.
2. Machines Used: Reformer vs. Sweatlana
Both classes use resistance-based equipment. Pilates uses the reformer, equipped with springs, a carriage, foot bar, and straps. It’s versatile, with settings tailored to the practitioner’s skill, injury status, or needs.
Solidcore’s Sweatlana looks similar but is custom-built for this method. It features higher resistance options, a longer platform, and added resistance angles to create that signature muscle shake. The machine’s design supports the high-intensity tempo and quick transitions Solidcore thrives on.
Bottom line: the reformer is adaptable; Sweatlana is aggressive.
3. Class Atmosphere: Mindful vs. High-Energy
Pilates classes tend to be calming, even when difficult. You might hear classical music or no music at all, with instructors guiding you through breath cues and precise movements.
Solidcore flips the switch: low lights, loud music, and high-energy coaching that feels more akin to a boutique bootcamp than a meditative experience. It's designed to feel intense—and it delivers.
Neither is better or worse—it depends on what energizes and motivates you.
4. Breath and Form: Foundational vs. Supportive
In traditional Pilates, breath is integral. You’re often cued to inhale and exhale with each movement, supporting spinal alignment and deep core engagement (think: pelvic floor, diaphragm, transverse abdominis).
In Solidcore, form and breath still matter, but they take a back seat to tempo and tension. The focus is on holding muscular tension—sometimes so intensely that conscious breathing gets lost in the mix. While instructors do coach on posture, there’s less emphasis on the subtleties of diaphragmatic breathing or alignment.
Pilates: breath-driven. Solidcore: muscle-driven.
5. Impact on the Body: Functionality vs. Hypertrophy
Here’s where the training outcome differs.
Pilates tends to focus on functional strength—think core stabilization, posture improvement, mobility, and injury prevention. Many practitioners use it alongside other training or as a recovery tool.
Solidcore leans toward hypertrophy—muscle growth through deep fatigue. Over time, you may notice more muscle tone, especially in glutes, core, and upper body. It’s closer to a slow-motion strength training session, albeit low impact.
In simpler terms:
Pilates builds body awareness and alignment. Solidcore builds visible strength and endurance.
6. Injury Prevention vs. High Burn
This distinction matters. If you’re recovering from injury or working with chronic pain, a classically trained Pilates instructor can adapt the session to your needs, offering modifications grounded in rehabilitative movement science.
Solidcore is not designed for rehabilitation. While it is low impact, it’s extremely demanding. Modifications exist, but they assume a baseline of physical readiness. This is not where you start if you’re easing back into movement post-injury.
That said, Solidcore can be incredibly effective for building resilience and joint stability when you’re ready for it.
So, Which One Is “Better”?
Let’s pause here for a reality check: this isn’t a competition. It’s more about asking, what does your body need right now?
If you’re looking for:
- Improved posture
- Core stability
- Gentle recovery from injury
- Stress reduction
- Movement for longevity
Pilates is likely a better fit.
If you want:
- Strength training with low joint impact
- A challenge that builds visible tone
- High energy and a gym-style burn
- Functional fitness with a modern edge
Solidcore might be your match.
You don’t have to choose one forever. In fact, many people find a combination works best—Pilates for foundation, Solidcore for strength progression.
My Take as a Wellness Professional
From a movement and nutrition lens, I always look at exercise through a few key filters: does it support long-term joint health? Does it build strength without burnout? Can it coexist with your lifestyle?
Solidcore is impressive. It’s structured, time-efficient, and no doubt transformative for many. But it’s not beginner Pilates, and it shouldn’t be treated like a casual swap. This is strength training, plain and simple—just disguised in a Pilates-adjacent format.
That’s not a bad thing. Just an important distinction.
Pilates, on the other hand, remains one of the most sustainable practices for people of all ages and stages. It’s endlessly modifiable and focused on how you move, not just how hard you go.
Both are valuable. Neither is “better”—just different tools for different chapters of your wellness journey.
Healthy Habits
Whether you're drawn to Pilates, Solidcore, or something in between, supporting your body with mindful movement doesn’t have to be complicated. Here are a few ways to stay consistent:
- Start with movement you enjoy. You’re more likely to stick with a routine if you genuinely like how it feels—yes, even the shaking part.
- Balance intensity with recovery. Solidcore is intense. Give your body enough rest, or alternate with gentler movement like Pilates or walking.
- Work on your core daily—gently. A few minutes of intentional core work (planks, bridges, or Pilates breath) can improve posture and protect your back.
- Stretch and strengthen. No matter the workout, finish with a short stretch. It helps your nervous system reset and prevents tightness over time.
- Listen to your energy. Some days call for pushing; others call for presence. You don’t need to “earn” rest days. They’re part of the progress.
It's About Finding Your Fit
Movement doesn’t have to be all or nothing. You can appreciate the intensity of Solidcore and the refinement of Pilates. You can shake like a leaf one day and float through breathwork the next.
The point isn’t to label one as superior. It’s to recognize what your body responds to, what you enjoy, and what feels sustainable—not just this month, but for years to come.
If you’re curious about Solidcore, go in knowing what to expect: full-body fatigue, intensity, and a workout that feels like work. If that excites you, great.
If you’re more drawn to control, connection, and a gentler pace, Pilates might be your forever friend.
And if you’re like most of us? There’s room for both.
