MJ Fitness & Kickboxing

MJ Fitness & Kickboxing

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We Are Danbury’s #1 Transformation Program. Results-focused, Community-driven. We're Dedicated To Transforming Lives.

Bio
Former European Full Contact Karate Champion Mariusz Janicki is the founder and owner of MJ Fitness & Kickboxing . After more than 12 years of competing as a top level full contact fighter, Mariusz has retired to pursue his passion for helping others in achieving their fitness goals. Whether you are looking to lose weight, tone muscle, improve cardio, or simply live a healthier lifestyle, his

08/12/2026

💥 MEMBER SPOTLIGHT: NANCY IS BACK! 🔥

A few months ago, we featured Nancy in our Member Spotlight after she achieved incredible results in just a short period of time.

Well… she didn’t stop.

She kept showing up.
She kept working.
She kept trusting the process.

And today, Nancy deserves the spotlight AGAIN. 👏

Her transformation has now reached another incredible milestone:

🔥 30 lbs lost
🔥 few clothing sizes down
🔥 More energy
🔥 Less stress
🔥 Stronger and feeling better about herself

But the biggest transformation might be the one you can’t measure on a scale.

Confidence.

From the beginning, Nancy made a decision that she was going to take her health seriously. She didn’t come looking for a quick fix. She came ready to work.

And that’s exactly what she’s done.

She shows up consistently. She pushes herself through her workouts. She stays focused on her nutrition. And even after seeing great results, she never decided she had done “enough.”

She kept going.

That’s an important lesson for anyone working toward a goal.

Getting healthy isn’t a 30-day or 60-day project.

It’s about building a lifestyle that allows you to keep becoming stronger, healthier, happier, and more confident year after year.

Nancy is doing exactly that.

And seeing her tell us that she has more energy, feels less stressed, and simply feels better about herself means just as much to us as seeing 30 pounds disappear.

Because THAT is why we do what we do.

We don’t just want to help people lose weight.

We want to help people change the way they feel when they wake up in the morning.

Change the way they see themselves.
Build confidence.
Build strength.
Improve their health.

And realize just how much they’re capable of.

Nancy, congratulations on another incredible milestone. We were proud of you the first time we shared your story, and we’re even prouder today because you didn’t stop when you started seeing results.

You kept raising the bar.

30 lbs down and still moving forward. 💪🔥

Keep going, Nancy. Something tells us this won’t be the last time you earn the spotlight. ❤️

08/12/2026

🔥 TURN UP TUESDAY! 🔥

We turned up the energy and had some fun today! 💪🎉 Another awesome day of celebrating 11 years of MJ Fitness!
And we’re not done yet… 👀

🚨 THURSDAY we’re releasing our LIMITED Anniversary Deal with some of our biggest savings ever!
Stay tuned… you don’t want to miss this one. 🔥


08/10/2026

🔥 ANNIVERSARY WEEK IS HERE! 🔥

We kicked things off with MONDAY MADNESS and cranked the intensity ALL the way up! 💪😤

Big energy, hard work, and an awesome crew bringing it from start to finish. What a way to start celebrating 11 YEARS of MJ Fitness! 🎉

And we’re just getting started… 👊🔥


08/10/2026

🥳 Celebrating 11 Years... Our Biggest Deal Ever Drops Thursday 🎉

We still can’t believe it’s been a whole decade since MJ Fitness & Kickboxing first opened its doors. What started with just 4 clients in a small rented room has grown into a powerful community of warriors who lift each other up, push past limits, and celebrate every victory—big or small.

These past 11 years have been nothing short of amazing, and it’s all because of YOU—our incredible members and community. 💪🔥

To celebrate 11 incredible years of MJ Fitness & Kickboxing, we’re doing something we’ve never done before…

We’re releasing 11 Memberships at an EXTREME DISCOUNT — and it all goes live in just 3 days, on Thursday, August 13th!

⏳ These exclusive deals are only available from August 13th–16th — OR until they sell out!

🔥 5 spots were already snatched up by our Early Access subscribers, that means only 6 deals remain!

If you’ve been thinking about joining MJ Fitness & Kickboxing…

This is your moment.

This is the best deal you’ll ever see to become part of our fitness family for the next year.

Here’s to the next 11 years of strength, sweat, and success—together. ❤️

Photos from MJ Fitness & Kickboxing's post 08/08/2026

🏆🔥 BIG CONGRATS to our Summer Olympics Champion — Eileen! 🎉💪

And a huge shout-out to EVERYONE who participated! Four weeks of commitment, consistency, friendly competition, and plenty of fun. 👏

Beautiful summer weather isn’t slowing this crew down! ☀️💪 Your health doesn’t have an off-season.

No excuses. Just consistency and RESULTS. 🔥👊


08/06/2026

⏰ Last Chance! Early Access Ends Tomorrow!

Tomorrow is your LAST CHANCE to join our VIP Early Access List for our 11-Year Anniversary Deals! 🎉

If you're not on the list by tomorrow, you'll miss your opportunity to shop our anniversary offers before everyone else.

Here's how it works:

✅ Saturday at 8:00 AM, we'll open our Anniversary Deals EXCLUSIVELY to everyone on the VIP Early Access List.

Only after our VIP members have had their chance will any remaining memberships be released to the public.

🎁 What's waiting for you?

✔️ Over $1,800 in savings!
✔️ Our BIGGEST membership discounts EVER
✔️ Limited anniversary specials

First come, first served—once they're gone, they're gone!

Don't risk missing out on the best deal we've ever offered.

Join the VIP Early Access List before it's too late!

👉 Reserve your spot here:
https://go.mjfitnessct.com/secret-list-opt-in-2026

Thank you for helping us celebrate 11 incredible years of serving the Danbury community. We can't wait to celebrate with you!

MJ & Team

08/05/2026

🔥 MEMBER SPOTLIGHT: Mickey 🔥

A huge congratulations to Mickey on an incredible transformation! 👏

Through hard work, consistency, and dedication, Mickey has achieved some amazing results:
💥 15+ lbs lost
💥 12% body fat burned
💥 Added lean muscle mass
💥 Stronger, healthier, and more energized than ever

But what makes Mickey special goes far beyond the numbers.

As a longtime member of the MJ Fitness community, he brings positive energy to every workout and is always encouraging those around him.

He’s also a core member of our Spartan Race Team. Whether it’s training for months, climbing mountains, battling through mud, rain, or brutal obstacles, he’s always there—leading by example, supporting teammates, and reminding everyone that no one fights alone.

That’s what true leadership looks like.

Mickey reminds us that real transformation isn’t just about changing your body—it’s about building confidence, strength, and becoming the best version of yourself.

Mickey, we’re incredibly proud of everything you’ve accomplished and grateful for the positive impact you have on our community.

Keep crushing it, and congratulations on an amazing journey so far! 💪🔥


08/04/2026

☀️ Start your day strong. Finish your day proud. 🥊💪

Nothing changes unless you do. Keep showing up, keep putting in the work, and the results will follow.

Great job, morning crew! 🔥


07/31/2026

🎉 11 Years Strong... Our BIGGEST Anniversary Offer Ever Is Almost Here!

We can't believe it's been 11 incredible years! 🎉

What started in 2015 with just 4 members, a 600-square-foot rented room, and one big dream has grown into an amazing community of people committed to becoming stronger, healthier, and more confident.

From day one, MJ Fitness & Kickboxing has never been just about workouts. It's been about changing lives.

Over the past 11 years, we've celebrated thousands of victories, helped countless members transform their lives, supported local charities, conquered Spartan races together, and built a community that truly feels like family.

None of this would have been possible without YOU.

As a thank you to our incredible Danbury community, we're celebrating all week long during our 11-Year Anniversary Celebration (August 10-15) with fun events, Bring-A-Friend workouts, and one unforgettable anniversary party!

🎁 But here's the BIG news...

To celebrate 11 amazing years, we're releasing our BIGGEST ANNIVERSARY OFFER EVER.

We're talking about over $1,800 in savings, but this offer will only be available for a very limited time and only while spots last.

Once it's gone... it's gone.

If you've been waiting for the perfect time to get started, come back, or finally commit to your health, this is it.

🚨 Want First Access?

Join our VIP Early Access List today, and you'll be among the first to receive our anniversary deal before it's available to everyone else.

👉 Click here to join the VIP List:
https://go.mjfitnessct.com/secret-list-opt-in-2026

Don't wait until it's too late. The best offers always go first, and we don't want you to miss out.

Thank you for allowing us to serve this incredible community for the past 11 years.

We can't wait to celebrate with you!

Dedicated to Your Success,
MJ & Team

07/29/2026

🔥 Another PR for Janet! 🔥

Once again, Janet proves that age is just a number and mindset is everything.

Today, she crushed a new personal record by deadlifting 185 lbs—an incredible 40 lbs more than her own body weight! 💪

Think about that for a second. Most people place limits on themselves because of their age. Janet continues to shatter those limits every time she walks through our doors.

From conquering Spartan races and running 5Ks to climbing ropes and setting new strength records, she never stops challenging herself to become better than she was yesterday.

Janet’s journey is proof that consistency, hard work, and believing in yourself can accomplish incredible things. She inspires everyone around her to dream bigger, work harder, and never settle.

Janet, we couldn’t be prouder of you. Thank you for showing our community that it’s never too late to get stronger, chase new goals, and redefine what’s possible. ❤️👏


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Location

Category

Telephone

Address


5 Shelter Rock Road, Building D, 2nd Floor (next To DMV)
Danbury, CT
06810

Opening Hours

Monday 6am - 9pm
Tuesday 6am - 9pm
Wednesday 6am - 9pm
Thursday 6am - 9pm
Friday 6am - 9pm
Saturday 6am - 12pm