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

MJ Fitness & Kickboxing

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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

08/14/2025

🚨 ONLY 3 DAYS LEFT — 4 DEALS REMAIN! 🚨

This is it — your once-in-a-lifetime chance to lock in the BIGGEST savings in MJ Fitness history and transform your body, health, and confidence over the next 12 months.

Our exclusive 10-Year Anniversary Deal is your chance to make it happen… but time is almost up. There are only 4 deals left, and they’ll be gone before Sunday, August 17th.

✅ Allow these 2 easy steps to get access to the deals:
1️⃣ Tap the link below or scan the QR Code 👇
2️⃣ Secure your deal and save a buttload of money 💥

👉 https://go.mjfitnessct.com/deals-page-6324

Dedicated to your success,
— The MJ Fitness Team

08/13/2025

We are absolutely amazed by Nube’s transformation.

When she joined us at the end of January, she was ready for change, but even she couldn’t have imagined how far she’d come in such a short time. What started as a decision to take better care of herself has grown into a full-blown lifestyle transformation.

Nube comes to class every night with the most contagious smile and a spirit that lifts the entire room. She gives it her all every time, with energy that inspires everyone around her. Her personality is bubbly, kind, determined and her progress is the result of hard work, belief and heart.

Since starting her journey, Nube has done things she once thought were impossible. She completed her very first 5K Spartan Race earlier this year. Then she pushed even further, taking on a grueling 10K course. Now, she’s gearing up to face a 21K Spartan Beast in just a few weeks!

She has lost 50 pounds and 14% of body fat, but her transformation goes far beyond numbers. She has grown into a version of herself that is powerful, fearless and full of life. The same person who once questioned what she was capable of is now unstoppable - and there’s no going back.

Nube, we are beyond proud of the warrior you’ve become! You are proof that when you stay consistent, show up and believe in yourself, there is no limit to what you can achieve. Your journey is just getting started and we’ll be cheering you on every step of the way.

08/09/2025

Holly takes the win for our Summer Olympics 🏆🎉 Way to stay active and crush it all summer long!

And a big shout out to every single member who jumped in, competed and kept moving - you’re all champions in our book 👏

08/08/2025

📣 We’re thrilled to announce that MJ Fitness and Kickboxing is celebrating our 10-Year Anniversary! 🎉

To thank you for being part of our journey, tomorrow we will give away 10 memberships to MJ Fitness & Kickboxing at a MASSIVE DISCOUNT…

Follow these 5️⃣ steps to get access to the deals…

✅ Tap the Link below 👇
✅ Join the secret list for Special Anniversary Deals
✅ Use bonus nutrition guides to start your transformation at home
✅ Check your email this tomorrow morning to get early access to deals
✅ Secure your deal and save a buttload of money 🤑

For access, simply sign up in the link below to be added to our special list, and you’ll gain early access to this Anniversary offer when it goes live tomorrow, August 9th!

https://go.mjfitnessct.com/secret-list-opt-in-page-2033

The only way to guarantee that you secure a deal is to be on The Secret List!

GET READY FOR OUR BIG 10-YEAR ANNIVERSARY CELEBRATION!

FREE WEEK from August 11th -16th for everyone, no strings attached!

We hope you and your family can join us on this special week. It is because of our great local community that we are able to celebrate 10 years of fitness!

08/06/2025

💥 Eileen’s Comeback Story is Nothing Short of Powerful 💥

After a serious car accident and multiple surgeries, Eileen was told it would be difficult to return to her normal activities. But instead of giving up, she chose to fight for her strength, her health, and her life.

She found the support she needed at MJ Fitness & Kickboxing in Danbury—With the guidance of our supportive coaches, personalized training from Coach Josh, and an uplifting community behind her, Eileen shattered every limit placed on her.

Eileen didn’t just recover—she came back stronger than ever. With a mindset focused on growth and a heart full of determination, she’s doing things today that once felt impossible.

Her journey is a reminder that it’s never too late to start over, and you’re never too far gone to become your strongest self.

Eileen, you are an inspiration—and we’re just getting started.

08/04/2025

GET READY FOR OUR BIG 10 YEAR ANNIVERSARY CELEBRATION!

We’re thrilled to announce that MJ Fitness and Kickboxing is celebrating our 10-Year Anniversary!

To thank you for being part of our journey, we’re offering a special surprise for our past and new members. This offer is limited and exclusive, and you won’t want to miss it. (We're talking over $1,800 in savings!!)

For access, simply sign up in the link below or scan QR Code to be added to our Special List, and you’ll gain early access to this Anniversary offer when it goes live on Saturday, August 9th!

https://go.mjfitnessct.com/secret-list-opt-in-page-2033 👈

Here is a breakdown of everything going on:

FREE WEEK from August 11th -16th for everyone, no strings attached!

AUGUST 11: MONDAY MADNESS - bring the intensity!
AUGUST 12: TURN UP TUESDAY - let's have some fun!
AUGUST 13: FASHION WEDNESDAY - rock your MJ Fitness merch!
AUGUST 14: THIRSTY THURSDAY - drinks on us!

AUGUST 15: MJ FEST FRIDAY - join us for our Friends & Family BBQ! There will be food, drinks, music, games and fun!
5PM FREE COMMUNITY BOOTCAMP, 6PM BBQ!

AUGUST 16: SPARTAN SATURDAY - Free Spartan Race Workout at 10:15am!

We hope you and your family can join us on this special week. It is because of our great local community that we are able to celebrate 10 years of Community & Fitness!

07/30/2025

We can't believe it's been TEN Years!

From day one, MJ Fitness & Kickboxing was never just about workouts — it was about building something bigger than ourselves.

We started in 2015 with 4 clients, a small 600 sq. ft. rented room, and a dream: To create a space where people felt seen, supported, and strong — inside and out.

We didn’t have all the answers, but we had a mission:
To help our local community become the healthiest, most empowered version of themselves.

Every early morning, every late-night class, every challenge and comeback — it’s all been fueled by purpose.

Through shutdowns, setbacks, and the unknown… we stood tall together.

Not just to survive — but to serve.

Today, we are more than a gym. We are a movement. A family. A place where people rise, heal, grow, and become who they were always meant to be.

As we celebrate 10 strong years, we’re overwhelmed with gratitude for the lives we’ve touched — and the ones yet to walk through our doors.

This anniversary isn’t just a milestone… it’s a reminder that we are just getting started. It is because of our great local community that we can celebrate 10 years of fitness!

We'll be hosting an open house all week long starting 8/11! Keep an eye on our social media for more details! We hope you and your family can join us that week to celebrate!

To thank you for being part of our journey, we’re offering a special surprise for our past and new members. This offer is limited and you won’t want to miss it. (we're talking over $1,800 in savings!!)

For early access, simply click the link below to be added to our special list, and you’ll get this Anniversary offer when it goes live in just 10 days!

https://go.mjfitnessct.com/secret-list-opt-in-page-2033

Thank you for being a part of our fitness family. Stay tuned and get ready to celebrate with us!

Dedicated to your success,
MJ & Team

07/28/2025

🎉 Huge Congrats to Lady, Nube, and Janet! 🎉

Yesterday, these three amazing ladies crushed the 5K Southwest Margarita Race in Ridgefield! 🏃‍♀️💪🌟

Your strength, spirit, and smiles made us proud — thank you for representing MJ Fitness out there like true warriors! 💥🍹
Let’s give them a big shoutout in the comments 👏🔥

07/25/2025

🎉🎂 Happiest of birthdays to Taylor! 🎂🎉
Our front desk superstar, social media wizard, and the self-proclaimed GM (and honestly... we’re not arguing 😎).

From brightening up the office to keeping our socials on point, Taylor does it all — and somehow makes it look easy!

Drop some love in the comments and help us celebrate the one and only TAYLOR today! 💫🎈💻💅

Address

Danbury, CT

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

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