What are the opening hours?

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

MJ Fitness & Kickboxing

Home
United States
Danbury, CT
MJ Fitness & Kickboxing

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 focus is on you and your personal fitness needs. In addition to fighting, Mariusz has taught as a PE Teacher and Martial arts Instructor working with kids, adults, and professional athletes alike. Mariusz is always researching new training methods and ways to provide his clients with the most functional and effective workouts possible. With accomplishments such as two-time Polish Full Contact Karate Champion, four-time US Lightweight Champion, and amateur Muay Thai/K1 rule record of 8-2, Mariusz has seen, experienced, and mastered a variety of training styles from around the world. This first-hand fighting experience paired with a background in Body Building and Strength Sports Training, Boot Camp, Martial Arts, Personal Training and more, you can be sure Mariusz will help you both mentally and physically in achieving your fitness and weight loss dreams. Education/Certification
Master's Degree in Physical Education (2003) Wroclaw, Poland
Certified Trainer of Body Building and Strength Sports (2003) Worclaw, Poland
Martial Arts Instructor
Certified Personal Trainer
Certified Professional Nutritionist
Certified Boot Camp Instructor
Certified CPR / AED

12/01/2025

🔥 CYBER MONDAY IS HERE! 🔥

Missed our Black Friday deal? Don’t worry — we just launched our BIG Cyber Monday Special!

We’re making history at MJ Fitness and YOU get first crack at it.
Today only, grab one of 10 VIP 30-Day All Access Experiences for just $99 — normally $650!

Kickstart your fitness journey OR gift it to a friend for the holidays 🎁

What You Get:
✔️ 30 Days of Group Classes (3x/week)
✔️ 2 InBody Body Scans
✔️ Personalized Meal Plan
✔️ Nutrition & Recipe Guides
✔️ Food Log & Accountability
✔️ Full VIP MJ Fitness Experience

🎄 ONE DAY ONLY — Ends at MIDNIGHT!

This is your last chance before the holidays to score a massive deal.
Only for new & past members — and only 10 spots available.

👉 Click the Link Below or Scan QR to Claim Your Cyber Monday Deal Now 👇

https://go.mjfitnessct.com/cybermon

Let’s make this your healthiest holiday season ever 💪

The MJ Fitness Team

11/28/2025

🚨 BLACK FRIDAY DEALS ARE LIVE! 🚨

Our BIGGEST sale of the entire year just dropped — and the first 10 people to grab their spot save OVER $2,000 on our Transformation Programs!

This is FIRST COME, FIRST SERVE.

🚨 7 deals were claimed instantly by Secret List members.

That means ONLY 3 LEFT!

If you’ve been thinking about starting your transformation, this is the best deal you’ll get all year — no exceptions.

👇 Click the link below or scan QR Code to claim one of the last 3 deals 👇

https://go.mjfitnessct.com/deals-page-2025?sessionId=14e72261-fefe-4c45-8363-062e09504cb5&trigger_link=qRzOPNFybnS0vME3gSUR

MJ & Team

11/27/2025

Happy Thanksgiving from our MJ Fitness family to yours! 🙏

We are so thankful for the amazing, strong, and supportive community we’ve built together.
Your dedication, energy, and heart are what make MJ Fitness truly special.

Reminder: No 7am or 8am classes tomorrow — but join us for our Turkey Burn Bootcamp at 9am! 💪
Afternoon schedule stays the same.

11/26/2025

💥 TRANSFORMATION SPOTLIGHT: PATRICIO 💥

Today we’re celebrating someone who continues to raise the bar every single week — Patricio. A dedicated husband, father, and one of the hardest workers inside our MJ Fitness community.

Since joining us, Patricio has completely transformed not just his body, but his mindset and lifestyle. And even after sharing his progress before, he didn’t slow down — he pushed even harder.

He is now down 20.5 lbs and has burned an incredible 9.2% body fat, proving that when you stay committed, results will ALWAYS follow. 🔥💪

What makes Patricio’s journey so inspiring is his relentless determination. Life is busy. Family comes first. Responsibilities never stop. But he chose to stop putting his health on the back burner and started showing up for himself — consistently and without excuses.

Early mornings. Long days. Tired evenings. It didn’t matter.
He showed up anyway.

Patricio is living proof that you can build strength, confidence, and a new level of fitness at any stage of life — as long as you’re willing to put in the work.

We’re incredibly proud of you, Patricio. Your dedication, discipline, and heart make you a true role model inside our MJ Fitness family. Your journey is far from over — and we can’t wait to see what you accomplish next. 👏🔥

11/24/2025

Missed Early Access? Here’s What Happens Next…

Early Access to our Black Friday Deals just opened — but if you didn’t join the Secret List, you missed the early access window.

BUT…
There’s still hope. 👀

If we have any discounted Transformation Memberships left, we’ll open the remaining deals to everyone on Black Friday.

Just a heads-up:
We only released 10 total spots, and they move fast — so keep an eye on your inbox Friday morning.

This could be your last chance to save over $2,000 on our biggest transformation programs of the year.

Stay tuned,
MJ & Team

11/22/2025

Cold. Rain. Nasty weather.
Still didn’t stop this crew from showing up and throwing down! 💥🥊
No excuses — just commitment and results.

11/21/2025

🚨🚨 Early Access Drops Tomorrow — Only 10 Spots! 🚨🚨

We’re releasing our BIGGEST Black Friday Savings EVER — and Secret List members get early access before it goes public.

Want in before everyone else?
You MUST be on the Secret List.

Only 10 discounted Transformation Memberships available — once they’re gone, they’re gone.

👉 JOIN THE SECRET LIST NOW — BEFORE IT’S TOO LATE! LINK BELOW 👇
https://go.mjfitnessct.com/sl-2025

11/20/2025

Big shoutout to our MJ Fitness warriors - Coach Jonathan, Sebastian and Leidy for crushing the 21K Spartan Beast in South Carolina! Their Trifecta is now complete 💪 We are so proud of your determination and hard work to prepare for this race 🔥

11/19/2025

💥 Member Testimonial: Janet — Stronger Than Ever 💥

When Janet joined our MJ Fitness family over two years ago, her goal was simple: improve her health and get stronger.

Today? She’s done that and so much more.

She’s lost 20 pounds, burned 9.6% body fat, and gone from strength training to finishing multiple 5Ks and Spartan Races. 🙌

Janet’s consistency, energy, and mindset prove that age is just a number — and determination knows no limits. She’s living her best, healthiest life and showing others what’s possible with the right support and a can-do attitude.

Janet, we are beyond proud of you — and can’t wait to see what’s next!

11/18/2025

Monday energy = ON 🔥
Different sessions, same mindset: show up, work hard, get better.
Let’s go, MJ Fam! 💪

11/15/2025

🚨🚨 OUR BIGGEST SALE OF THE YEAR! 🚨🚨

🔥 Brace yourself… in JUST 7 DAYS we’re dropping the BIGGEST, CRAZIEST, MOST INSANE Black Friday Sale MJ Fitness & Kickboxing has EVER done.

We’re talking 10 Transformation Memberships at a discount so huge we can only offer it ONCE A YEAR… and when they’re gone, that’s it.

💥 Over $2,000 in savings.
💥 ONLY 10 spots.
💥 NEVER offered again until next year.
💥 First come, first served — no exceptions.

If you’re even thinking about starting your transformation, THIS is the moment you’ve been waiting for.

Want the best chance to snag one of the 10 golden spots?

Then follow these steps NOW before someone else beats you to it 👇
1️⃣ Tap the link below or scan the QR
2️⃣ Join the Secret Black Friday List
3️⃣ Get our FREE Bonus Holiday Survival Guide
4️⃣ Watch your inbox on Saturday, Nov 22nd
5️⃣ Secure your deal + save over $2,000! 💸 BEFORE the public rushes in

⚠️ Warning: These WILL sell out. FAST.
If you’re not on the Secret List, you will NOT get early access — and you’ll probably miss out.
👉 JOIN THE SECRET LIST NOW — BEFORE IT’S TOO LATE! LINK BELOW 👇

https://go.mjfitnessct.com/sl-2025

11/14/2025

Happy Birthday to the one and only Coach Josh! 🎉
Thank you for your energy, your passion, and the way you push our members to be their best every single day.
Enjoy your special day! 💪🥊

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

Telephone

+2038854580

Website

http://mjfitnessct.com/

Alerts

Be the first to know and let us send you an email when MJ Fitness & Kickboxing posts news and promotions. Your email address will not be used for any other purpose, and you can unsubscribe at any time.

Shortcuts

Address
Telephone
Opening Hours
Alerts
Contact The Practice
Claim ownership or report listing

Want your practice to be the top-listed Clinic in Danbury?