Get started with two weeks of unlimited classes for $99

Getting fit starts here.

We help people 35+ get strong, burn fat, and achieve lasting strength.

Ativo Fitness Man Rowing

Get started with Ativo Fitness in 3 easy steps, and be on your way to feeling amazing again.

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01
Intro
Begin your journey by contacting us for a free intro.
02
Plan
Chat with a coach to create a plan that fits your life and goals.
03
Results
Start training, love working out again, and see results.

We’re with you every step of the way.

At Ativo Fitness, the top-rated, small group training gym in Middleton, MA, we know that lasting results come from a supportive community and personalized approach. Our expert coaches craft programs that fit your busy lifestyle, promoting strength and consistency. Join our Small Group Performance Program for dedicated coaching and a positive culture. Start your journey with Ativo Fitness today!

Our Programs

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Nutrition

Fast results start in the kitchen. Make a plan with a nutrition coach, regardless of your current lifestyle.

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Personal Training

Work 1-on-1 with a coach, get a customized training program and stay accountable with personal training.

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Testimonials

Happy, healthy members are our specialty.
Jennifer Sullivan
Jennifer Sullivan
May 31, 2024
Love the classes! Great mix, they don’t get boring! Always fun and I feel great after!
Julie Blanche
Julie Blanche
February 12, 2024
Ativo Fitness has changed my life. In many ways, saved it. I am a single mother who has two amazing young kids and a very intense and high pressure job. I struggled for a long time to find the time for myself to work out and prioritize fitness. It always seemed too hard to get myself to the gym and when I was there I wasn't feeling satisfied with the results, because I didn't have the right guidance. The coaches have shown an investment in me and root for me - every, single, class. The classes are results driven, challenging in the right ways, full of positive energy and leave you breathless, but wanting more. You can walk in feeling comfortable, accepted, not intimidated by what you typically find at a public gym. The clientele could not be more supportive both in and out of the gym. These people have become my family, my coaches some of greatest mentors in life and this place - my second home. It is my happy place and I cannot imagine my life, my routine or my health without Ativo. I will never stop being grateful for Adam and his incredible team of coaches! Come join us...see for yourself!
Doug
Doug
January 30, 2024
Adam is the best coach I’ve ever had!!!
Lucas Atila
Lucas Atila
January 24, 2024
Best gym in the area
Fabricio Zambroni
Fabricio Zambroni
July 28, 2023
I am delighted to share my experience at Ativo Fitness. The personalized classes are amazing, and the instructors always provide individual attention to each student, which makes a significant difference in my progress. The ambiance is incredibly pleasant and welcoming, making workouts even more enjoyable. I highly recommend it to everyone looking for a top-notch gym with exceptional service!
Kurt
Kurt
July 24, 2023
Joining Ativo has been a game changer for me. I have always struggled finding the time to workout and stay motivated without life getting in the way. Thanks to Ativo’s flexible workout schedule, the variety of workouts offered in Burn, Grind, and Strength focused classes, and helpful critiques from the coaches, I can see and feel a significant difference since I started a few months back. I am excited to see what the future holds for me on my Ativo fitness journey!
Jason Sechrist
Jason Sechrist
June 23, 2023
Very happy I joined Ativo. Adam and Josh are great trainers. You can feel confident in having good form because of the small group setting. They do a great job of watching and correcting form when needed. Overall just an awesome gym, highly recommend!
Manjuri Layne
Manjuri Layne
June 21, 2023
Ativo has been a game changer in terms of developing a healthy fitness regimen for me. As a busy mom with a crazy schedule and a stressful job that keeps me seated all day long, I never thought I would enjoy my workouts as much nor see the physical changes that I have in a few short months. Adam and Josh are very attentive trainers and they ensure not just form and fitness but also challenge you to step up your game each day. What seems impossible today will tomorrow become your warm up - I found that to be absolutely true after joining Ativo.
James Czarnecki
James Czarnecki
November 12, 2022
Since starting at Ativo Fitness at the beginning of the summer I have felt a change in my overall performance, both mind and body. The workouts have helped me round out my fitness and the environment is great, very welcoming. I was looking for something that would mix in weight training with cardio and have a focus on form and execution over reps and weight. Ativo has been a great find for me personally, I love the class schedules, the people, and the coaching. I highly recommend for anyone looking to balance their busy life schedule and get in shape or stay in shape!
Caroline Jamur
Caroline Jamur
November 11, 2022
I can't say enough about Ativo! As a busy mom with a stressful job, I needed something that was efficient and got the job done, and Ativo has done that and so much more! The results I've seen and the progress I've made have been wild. I didn't realize how much strength work I was missing out on at other gyms until the coaches at Ativo really taught me the proper way to make strength gains. The value you get for the price is incredible, you basically have a personal trainer but you get to work out with other people just like you. Do yourself a favor and give Ativo a shot, you won't be disappointed.

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