By The Underground FLEX Coaches
Strength training isn't just for bodybuilders, athletes, or the person lifting the heaviest weights in the room.
It's for pretty much everyone.
Whether you're in your 20s and want to feel stronger, in your 40s juggling a million things, or thinking more about staying active and independent as you get older, building and maintaining muscle is one of the best investments you can make in your body.
That's exactly why we created FLEX Total Body Strength at The Underground Phoenix.
FLEX isn't about lifting the heaviest weight in the room. It's functional, full-body strength training designed to challenge you at your level—and help you build strength that translates beyond the studio.
Why Is Strength Training So Important?
Cardio gets plenty of attention, but muscle matters—a lot.
Resistance training helps build and maintain muscle strength, supports bone health, and improves your ability to perform everyday movements. And as we get older, maintaining muscle becomes increasingly important.
The best part? You don't have to train like an athlete to get the benefits.
Consistency matters more than being the strongest person in class.
5 Benefits of Total Body Strength Training
1. Build and Maintain Muscle
This one may sound obvious, but it's a big deal.
Adults naturally tend to lose muscle mass as they age. Strength training gives your muscles a reason to keep working, adapting, and getting stronger.
And more strength isn't only about what you can lift.
It's carrying groceries. Picking up your kids. Moving furniture. Traveling. Getting up off the floor. Doing the things you love without thinking twice about whether your body can handle them.
2. Support Stronger Bones
Your muscles aren't the only thing responding to resistance training.
Weight-bearing and resistance exercise place healthy stress on your bones, which can help maintain bone strength and is particularly important as we age.
Think of strength training as training the framework underneath everything else.
3. Improve Balance and Everyday Movement
Squatting. Lunging. Pushing. Pulling. Carrying.
Sound familiar?
Those aren't just gym exercises. They're movements we use in real life.
Functional strength training helps your body become stronger and more capable in those movement patterns, which can support balance, stability, coordination, and everyday mobility.
4. Support Your Metabolism
Muscle is metabolically active tissue, meaning your body uses energy to maintain it.
But we don't love strength training because it promises some magical calorie burn.
We love it because building and maintaining muscle supports body composition, physical function, and long-term metabolic health.
That's a much bigger win.
5. Build Strength for the Long Game
This might be our favorite benefit.
Strength training isn't just about what your body can do today. It's about helping preserve what you want it to be able to do years from now.
The goal isn't simply to lift heavier.
It's to stay capable.
Is Strength Training Good for Beginners?
Absolutely.
One of the biggest misconceptions about strength classes is that you need to "get in shape" before taking one.
You don't.
In FLEX Total Body Strength, exercises can be modified, weights can be adjusted, and your coach can help you find the version of a movement that's appropriate for you.
Start lighter. Learn the movement. Build from there.
Nobody gets bonus points for grabbing the heaviest dumbbells.
What Is FLEX Total Body Strength?
FLEX is The Underground's full-body strength training class designed around functional movement.
You'll squat, hinge, push, pull, lunge, stabilize and work multiple muscle groups—with coaching to help you move confidently and effectively.
And because this is The Underground, you're still getting the music, energy, colorful studio and community that make working out feel a whole lot less like a chore.
Strong looks different on everybody.
That's kind of the point.
Ready to Get Stronger in Phoenix?
You don't have to wait until you're "ready" for strength training.
Choose your weights. Take the modifications. Learn as you go.
We'll handle the workout.
You bring the muscle. New to The Underground? Grab our 2 Weeks Unlimited for $39 and experience everything our studio has to offer!
— The Underground FLEX Coaches