131 Webster Square Rd, Berlin, Connecticut 06037

We Build Strong Bodies With The Most Effective Group Fitness In Berlin

Claim your free trial here! Request more information


Request More Information

By providing your number you consent to receive marketing/promotional/notification messages from SIN Fitness. Opt-out anytime by replying STOP. Msg & Data rates may apply.

Personal Training near Berlin

Personal Training

With our personal training program, you'll get access to 100% customized fitness on a flexible schedule. From workouts specifically designed to help you achieve your goals to key nutrition strategies and advice on every aspect of fitness from a dedicated coach, personal training is the most holistic approach to health and wellness.

Learn more
Personal Training near Berlin

Group Fitness

Our Group Fitness classes are designed to make fitness training fun. We surround you with a great group of new friends and we help you get the most out of every movement. Learn more today.

Learn more
Personal Training near Berlin

Fitness Kickboxing

Our kickboxing program will give you the opportunity to torch calories and get that lean, toned look in no time. Get started with the best workout in Berlin and see results faster than ever! Kickboxing provides a fun, high-energy, dynamic workout that's great for anyone.

Learn more
Personal Training near Berlin


Take on a high-energy workout and enjoy the great outdoors during our Bootcamp training in Berlin. We're here to keep you motivated and supported like never before. Join us in Berlin today!

Learn more
Personal Training near Berlin


Give your child the opportunity to shine in our SIN Fitness program. Kids Fitness in Berlin is more than just play time. Our classes give your child a sense of community, new friends, and a healthier lifestyle.

Learn more
Personal Training near Berlin


Get started today with the best Yoga Classes in Berlin at SIN Fitness. We're helping men and women of all ages and abilities take a break from the stresses of training and everyday life.

Learn more
Personal Training near Berlin


Tighten, tone, and strengthen every muscle in your body with our Barre Classes in Berlin. We're helping men and women of all fitness levels thrive with professional instruction and a high-energy atmosphere.

Learn more


Karlene Falk

I've been going to this gym for almost 6 months now and I absolutely love it!! ALL of the Coaches are so encouraging and knowledgeable!! The different classes at all different times makes it impossibl...

Read More

Lynne Blais

Very welcoming gym! I have been a member for close to 3 years. They have a very warm, professional staff who is always ready to assist and encourage their members. I love my time at this gym!!...

Read More

Ewelina Ostaszewska

Great place, definitely recommend it...

Read More

Sarah Peters

I started off by buying a month unlimited from Groupon not knowing how I was going to like the gym. It was the best decision I ever made. I finally found my place, the staff and instructors are awesom...

Read More

Nichole Bocwinski Howe

I have attended 4 classes so far and everyone is so welcoming!! I HIGHLY recommend!!! Fun workouts that challenge you and make you feel accomplished afterwards!...

Read More

Jason Miller

I have been working with Randy for several months and am noticing a lot improvements. My weight is down, clothes fitting differently and I look different. A Plus, highly recommend!...

Read More

Our variety of awesome classes & amazing people help you stay motivated and reach your fitness goals

At SIN Fitness, we know you want to look and feel your best. For that to happen, you need to start a regular fitness routine. The problem is you don’t know where to start and that may make you feel overwhelmed and discouraged.

We know how difficult it is to stay motivated long enough to get and keep the results you want. You don’t want to keep trying the same things over and over, but the thought of going to a new gym near me can be scary. You wonder, will I feel like an outsider? Will I be able to keep up? Will I get the personal attention I need? Will I be intimidated? My fitness goals seem so far from where I am now. Can I do this?

We believe getting and staying fit shouldn’t feel like an unbearable chore. That’s why we’ve built an incredibly supportive group fitness community where everyone fits in and nobody sticks out. We will keep you motivated and show you how to balance your life with fitness in a way that makes it possible to finally reach your goals.

We’ve got your back!

Our knowledgeable coaches really care about you and your goals. Many of them started out as SIN Fitness members just like you. They understand many of the things you’re dealing with and how that feels.

We give you the personal attention you deserve, right from the start. Each workout is modified and scaled to fit your current abilities. We make sure you learn the right way to do everything to get the maximum benefit and avoid injury. We will guide you to success with motivation and accountability.

Our Easy Plan To Get Started!

Step 1

Start your FREE 1 week trial

Fill out and submit the Request More Information form. We’ll contact you right away to answer any questions and schedule your first class.

Step 2

See how we can help

Experience workouts you’ll love with people you’ll love working out with. See how staying committed to the gym is easier than you thought.

Step 3

Enjoy the body & health you deserve!

Imagine a new you! You’ll feel increased energy, strength, and endurance after only a few weeks. You’ll be looking and feeling your best in no time!

Stop sliding further away from where you want to be, looking and feeling less like the person you deserve to be. Instead try SIN Fitness gym in Berlin today and change your life for the better.

Take Advantage Before It's Too Late

Exclusive Online Offers

Intro Trial

FREE / 1 Week


Sign Up Now

Meet Our Staff

Trainer Jamie McCue with SIN Fitness

Jamie McCue

ACE CPT / Co-Owner

Jamie is a graduate of Central Connecticut University. She has always been interested in health and fitness having been a three sport athlete while in high school. She attended the National Personal Training Institute and received her diploma in personal training and nutrition. She was then certified by International Sports Science Association, ...
Trainer Ryan Kolej with SIN Fitness

Ryan Kolej

N.A.S.M. CPT - FNS / Co-Owner

“Before my early twenties no part of my life involved anything health or fitness related, but I had a turning point. Fitness changed my life, probably saved it, and I wanted to help others change theirs by reaching their own goals while showing them what they’re capable of. Twenty years later I’m serving others, helping them, ...
Trainer Emily Bryers with SIN Fitness

Emily Bryers

N.A.S.M. CPT / Coach

“I’ve always loved working out, being part of a team, and surrounding myself with a community of positive encouraging people. Becoming a coach at SIN Fitness felt like such a natural next step. “I received my N.A.S.M. CPT certification and have enjoyed encouraging members to “get out of their comfort zone” in every ...
Trainer Alisha Sirotnak with SIN Fitness

Alisha Sirotnak

N.A.S.M. CPT / Coach

Alisha’s life centers around helping people improve the quality of their life through nutrition and physical activity. She recognizes and appreciates the power of daily lifestyle habits in maximizing one’s health. She achieved a masters degree in nutrition and is a registered dietitian that specializing in obesity and weight ...
Trainer Kaylee Dietsch with SIN Fitness

Kaylee Dietsch


Kaylee started at SIN Fitness as a member who fell in love with what SIN Fitness represented: growth, positivity, and togetherness. Kaylee loved watching people reach their goals and eventually decided she wanted to be a part of other’s fitness journeys, helping them reach their goals instead of only watching. Having a foundation of ...
Trainer Rob Arpin with SIN Fitness

Rob Arpin

Barre Instructor

Rob is a Certified Barre Instructor and has been instructing at gyms and yoga studios across central CT for many years. Rob is also an avid yogi and aspiring surfer. By day, Rob is a kindergarten teacher and prioritizes the integration of mindfulness, movement, and yoga into his daily classroom routines. Rob believes strongly in the Barre ...


Free Report

Your Guide To Macros

Nutrition is the most important part of weight loss. And understanding macros is the key to knowing how to eat in a way that is healthy and sustainable for you. You can reach your fitness goals, and we'll be your guide.

Download Now
Personal Training near Berlin

Request Information Now!

Personal Training near Berlin

Let us e-mail you this Free Report