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Boston private training gym

The Premier Personal Training Experience in Boston’s South End.

The Premier Personal Training Experience

in Boston’s South End.

Get ready to fall in love with fitness at the leading Boston private training gym, where experienced trainers, intelligent programming, and a welcoming community come together to help you transform your health and performance.

Book a Trial Session Today

Why Train at Fit

Upgrade your Health

Fit is a Boston Personal Training Gym built around independent, experienced trainers who deliver personalized fitness experiences in a private, cutting-edge environment.

Experience That Delivers Results
The difference between the inexperienced and the expert is like lightning versus the lightning bug. Our team of certified personal trainers brings the expertise you need to achieve real, lasting results.

Independent Trainers Who Care
Each trainer in the South End at Fit operates their own business. They’re invested in your progress because they’re building their dream alongside yours.

Intelligent Programming
Results happen faster with smart training programs designed specifically for your goals, no cookie-cutter workouts.

5-Star Service, Always
We’re proud of our reputation for exceptional service and strong client relationships. Your experience matters.

Discover our clean, modern, fully equipped private training studio in Boston.

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Discover our clean, modern, fully equipped private training studio in Boston.

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Our Mission

Fit exists to empower motivated clients and independent trainers. We’re more than a Boston private training gym, we’re a community where personal trainers and clients thrive together.

Our beautiful studio in Boston’s South End provides a state-of-the-art training space, ideal for working one-on-one with experienced coaches who prioritize results and connection.

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Work with Boston’s Best Personal Trainers

Finding the right personal trainer in the South End can be life-changing. Our team will help you build strength, boost confidence, and reach your goals with programs tailored to you.

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For Trainers: Upgrade Your Career

You’ve outgrown the corporate gym model. Fit is A beautiful, cutting edge gym for Independent Trainers to thrive. Reliable booking, clean, state of the art equipment, and lead generation. Learn how to upgrade your career at Fit.

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Book a trial
session today

Book Your Free 45-Minute Session with a Certified Trainer at your Boston Private Training Gym Today!

Upgrade your Health
Training with Megan has been one of the best decisions I’ve ever made. She’s incredibly knowledgeable and professional, but also genuinely supportive and motivating every step of the way. Not only does she tailor every session to align with my long-term goals, but she also adjusts on the fly to meet my needs in the moment—whether that means modifying a workout based on how I’m feeling that day or being flexible and patient when I have to bring my kid along. Megan creates a positive, empowering environment where I feel supported, challenged, and seen. I’m stronger, healthier, and more confident thanks to her. Steve also does an excellent job of running the studio. It is welcoming, spacious, and always clean.
B
Bevin Kim

Client

Marcy is one of the best trainers I’ve ever trained with. She has a really good understanding of the human body and always makes sure nothing we’re doing will hurt me. Seems like she has an infinite database of exercises. The time goes so fast and I get a great workout. I highly recommend her. Great space too! They have almost every exercise apparatus I can think of.
H
HJ B

Client

As an independent contract fitness professional, Steve at Fit has created the space that trainers and health and fitness professionals dream about. The equipment is top of the line while also having ample open space for functional movement and coaching. The space can hold multiple trainers simultaneously, but it never feels like you’re impeding another trainer and client’s work. Steve is very attentive to requests of trainers and clients and is actively working to continue to provide the best space, equipment, and training possible for both clients and trainers. 10/10.
M
Megan Beck

Personal Trainer

Marcy truly puts the “personal” in personal training. I have been working with her for years, and she is constantly adapting her workouts for me to my body’s needs. She is also a licensed massage therapist, so she is always ready to audible and do a “recovery day” if needed. She is kind, personable, and professional, and just a really good person overall. She makes it worth waking up while it’s still dark outside in the middle of winter to get a workout done. I would not hesitate to recommend Marcy to anyone in need of a personalized workout routine.
D
Daniel Sabra

Client

Steve is an amazing trainer! His holistic approach to fitness has improved my strength, flexibility and speed. I’m in better shape in my mid-40’s than at any other time in my life. He also does an amazing job at providing clarity and understanding to why we do the drills that we do. It helps me understand the mental side of training as well. I would highly recommend Steve to anyone looking to see gains in their physical and mental health.
C
Christopher Bacon

Client

If you’re looking for a gym space that feels both welcoming and thoughtfully designed, this South End gem is it. The spacious layout never feels crowded, and they have every type of equipment you could ask for. The aesthetic fits seamlessly into the neighborhood. Steve is truly the heart of the gym. He’s constantly reading up on the latest in health and wellness, sharing insights with clients, and making sure everyone gets the most out of their training. No matter how hectic life gets, he’s incredibly accommodating when it comes to scheduling, making it easier to stay consistent. Whether you’re looking to switch up your usual routine or complement group classes, this is an excellent option in an unbeatable location. Highly recommend!
H
Hannah Benson

Client

Achieve Your Goals with a Personal Trainer in Boston’s South End

Results happen fast when you combine intelligent programming with expert coaching. Start with your free 45-minute consultation at Fit — the top Boston private training gym for serious results.

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Train your clients
in a Top-Notch Facility

If you’re a trainer in the South End looking for a modern, inspiring space, Fit is designed for you.

No uniforms.

No corporate management.

Freedom to build your dream business.

Join a community of driven trainers at Boston’s most forward-thinking personal training gym.

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Our Blog

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September 1, 2025

The Arthrokinetic reflex

Life is a contact sport.  Day in, day out your body takes a beating. Your muscles, bones, ego; The whole shebang. Today we focus on joints, and on something called arthrokinetic dysfunction (Yes I looked up how to spell that). Arthrokinetic dysfunction, i.e. the arthrokinetic reflex, is a ten cent phrase that I throw out there when I’m wearing my glasses and want to sound smart. It is, above all, a way you can immediately increase strength and flexibility, impress your chiropractor, or Wow your friends at your next get together.
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June 30, 2025

The Simplest exercise plan.

‘If something is worth doing, it’s worth doing every day.’ I have a new theory: all it takes is five daily exercises to get fit. And you know what that means? It means I’m getting ripped this summer. This is the simplest exercise plan ever. So simple not even I can mess it up.  
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November 12, 2025

3 simple changes I made to lose 7% body fat in 3 months

At the start of 2022 I was 216 lbs and 16% body fat. These were both personal highs. The kind of record you don’t want to set. My pants were fitting snug. Last week I measured 204 and 9%. I changed 3 habits to lose 7% body fat.
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