Let’s Strengthen From the Center Out.
A Strong Core. A Stronger You—in Just 30 Minutes.
Group Core® is a high-energy, athletic core workout that builds total-body strength and stability from the inside out. This 30-minute session targets your entire core—from shoulders to hips, front to back—improving performance, posture, and power in everyday life.
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Weak Core. Tight Back. Unstable Movement? That Ends Now.
Your workouts skip core work or treat it as an afterthought.
You’re strong in some areas but struggle with stability or back pain.
You’ve tried crunches—but they don’t seem to fix anything.
You want to feel more powerful in sports, training, and daily movement.
Time is tight, and you need something fast, focused, and effective.
If your core is holding you back instead of holding you up, Group Core gives you a smarter way to build strength that matters.
Build Strength Where It Counts Most
A strong core isn’t just about abs—it’s about movement, balance, and power in everything you do. Group Core delivers a focused, functional approach to core training, helping you move better, feel stronger, and reduce pain where it matters most: your back, hips, and shoulders.
Guided by expert coaches and set to motivating music, every 30-minute session combines bodyweight, resistance, and platform work to help you stabilize, align, and perform at your peak.
With Group Core, you’ll:
Build Athletic Power – Strengthen your trunk to improve your speed, lifting, and movement mechanics.
Protect Your Back – Stabilize your spine and support your posture to relieve pressure and prevent pain.
Improve Functional Strength – Train movements that carry over into real life—from lifting groceries to rotating in sports.
Enhance Balance & Coordination – Strengthen the muscles that keep you upright, agile, and injury-resistant.
Maximize Your Time – Just 30 minutes, laser-focused on one of the most important areas of your body.
It’s core work with a purpose—and results you can feel every day.
Strength, Stability, and Performance—All From Your Core
Enhanced Athletic Performance
Your core is your power center. Group Core helps you run faster, lift better, and move more efficiently.
Back Pain Relief & Postural Support
Target deep core muscles to support the spine and reduce strain—so you can stand taller and move pain-free.
Real-World Strength & Control
Train for life—not just the gym—with dynamic movements that translate to everyday strength and function.
Stronger Core. Better Movement. In Just 3 Simple Steps
Sign up now for instant access to Group Core and the entire MOSSA On Demand library—no commitment, just better core strength.
Move with confidence through 30-minute sessions built by pros, using weight plates, platforms, and bodyweight to target every inch of your core.
Stronger core. Fewer aches. Better balance. Whether you're training hard or just living life, it all gets easier with a stronger center.
See How MOSSA On Demand is Helping People Move Better, Feel Stronger, and Stay Motivated
“If you are looking to get started in fitness or just looking for a virtual way to work out, this is the best program out there. It's designed to help you move and function better in life. It isn't just about reps and minutes at peak heart rate. It is about becoming stronger, healthier, and more confident about yourself. Being able to do things you couldn't before while making strides in fitness. MOSSA workouts are designed to accommodate everyone in all areas and levels of fitness.”
Amanda M.
via Email
“In the Fire Service, we often lift patients from awkward spaces such as a bed or a bathtub. Over my 29-year career, all that off-center lifting left me with chronic back pain. I had resigned myself to a lifetime of pain pills in order to sleep. Then I discovered MOSSA. The strength-based training, as well as the emphasis on flexibility and core, has produced a second chance at life without pain or medication.”
Matt K.
via Email
"A friend recommended MOSSA On Demand about 2 years ago, specifically Group Power, and I was quickly hooked. All I had were hand weights and resistance bands, but since then I've added a step and the MOSSA barbell and dumbbell sets...I love that I can be a positive role model for my kids and be a witness that you can keep moving no matter where you are physically or mentally. And I credit MOSSA for that."
Kara H.
Facebook Review
Everything You Need to Know About Group Core
What is Group Core?
Group Core is a 30-minute, expert-led workout designed to strengthen your entire core—front, back, sides, and shoulders to hips. It enhances performance, improves balance, and helps reduce back pain.
Is it just ab exercises?
Not even close. You’ll train your whole core using dynamic, functional movements that target stability, control, and power—not just aesthetics.
Do I need equipment?
You’ll ideally use weight plates and a platform, but you can modify the workout using dumbbells or bodyweight if needed. Additionally, there are some Group Core workouts in our library that use no equipment.
Can beginners do Group Core?
Absolutely. Every session offers modifications, and the expert coaching ensures you progress at your own pace while maintaining proper form.
How does the free trial work?
Try it free for 14 days. You’ll get unlimited access to Group Core and every MOSSA workout. Cancel anytime before your trial ends—no charge, no stress.
How often should I do Group Core?
2–3 times per week is ideal for performance and recovery. It pairs perfectly with strength, cardio, or flexibility programs.
How do I get started?
Click Start My 14-Day Free Trial, sign up, and take your first step toward a stronger, pain-free core.
A Strong Core. A Stronger You—in Just 30 Minutes.
Group Core is a high-energy, athletic core workout that builds total-body strength and stability from the inside out. This 30-minute session targets your entire core—from shoulders to hips, front to back—improving performance, posture, and power in everyday life.
Start My 14-Day Free Trial