ABOUT US

Welcome to Amplify Fitness!

We offer all-access gym memberships, personal training, small group training, fitness classes, and American Ninja Warrior classes.

Sean McManus, Eric Abella, and Mia Lazarewicz are the founders of AF. We have decades of experience in personal training, strength and conditioning, gym management, and lifestyle coaching. Our clients have ranged from age 4 to age 98!

Young, old, beginner, expert, we’ve got the training experience and staff to guide you where you want to go. If you’re tired of saying that you’re going to join a gym soon, now is the time!

Start personal training with us today and notice the difference immediately.

  • We consider everyone an athlete. Period.

  • We say yes. We have taught 90 year olds boxing and 12 year olds powerlifting. If you want it, we support it, and pledge to help you train safely.

  • We love hard work. Hard work is what creates the change you want. But…

  • We know that the gym is just one part of your life. Our trainers will consider your time, your other obligations, and your gym likes/dislikes. We work with the whole you — not just the part of you that’s learning how to deadlift.

  • We love bad puns and jokes. We can’t weight to share them with you.



Facility and location

AF is packed with everything you need, from cardio to strength to functional training and American Ninja Warrior obstacles. We have private, clean locker rooms, and one amazing glitter wall.

Don’t bring your own lock.

Don’t bring your own towel.

We got you.

a large open gym full of weights, kettlebells, benches, squat rack, and stairmaster


  • Upload your workouts from our treadmills directly to your phone.


  • Stream your favorite shows right from our machines.


  • Benches, platforms, free weights, cables, racks, land mines, pull-up bars, sleds, battle ropes, rope climbs, punching bags.


  • 55 foot turf floor for small group classes, agility drills, or mobility work. You wanna practice handstands? We have the perfect place for it.


  • Did we mention American Ninja Warrior? An entire area devoted to the obstacles you see on TV: salmon ladder, pegboard, grip gauntlets, ring toss, cliffhanger, and more.

    Are you brand new to ninja training? So is everyone else! You’ll be able to work at your level, with our coaches who have been featured on the NBC show!

AF is located at 1230 Soldiers Field Road, in Boston, on the banks of the gorgeous Charles River. The gym is minutes from Cambridge, Watertown, and downtown Boston.

We are within one mile of several T stops, and steps from multiple bus routes. While we have ample parking in our lot being the building, please ride your bike, take public transportation, or walk when possible!

TESTIMONIALS

Check out our ⭐️⭐️⭐️⭐️⭐️ reviews!

“I could not be more excited for Amplify Fitness! I have been lucky enough to work with the founders of the gym for ten years, and they are phenomenal fitness professionals. I never considered myself an athlete, and I couldn’t imagine I would feel welcomed into a gym community until I met these folks. The team at Amplify will help you build strength and confidence, find ways to make exercise fun and motivating, and introduce you to an amazing community. Check them out, you will not be sorry!”

— Nicole C.

“I have had the privilege of working alongside Eric, Sean, and Mia for 10 years and they genuinely care about everyone they work with, young to old. As someone who has been in the industry for 15 years I know one thing for sure. ‘Nobody cares how much you know until they know how much you care.’ This describes Amplify Fitness perfectly.

The energy and enthusiasm they bring to their training is contagious. Their approach to training not only builds a strong/well-conditioned athlete but more importantly, builds confidence in clients and members alike. I have learned a lot during my time with them and I am forever grateful.”

— Ryan Vanderweit, MS, CSCS, CPT

“I am so excited that Amplify Fitness is coming to town, and will be run by the same personal training team that made our previous gym so special. That place was a sanctuary for me; a place to exercise, improve myself, and spend time with staff who became friends. Eric, Mia, and Sean are dedicated and passionate about fitness, and as friendly and encouraging as one could hope for. They create an environment of friendly motivation in a non-judgmental environment. Plus, they are hilarious, and between them have immense knowledge about not just diet and fitness but also everything good on Netflix!”

— Sameer S.

“Mia, Eric, and Sean have created a gym that is THE ideal community partner. For many years, Mia worked with my non-profit to help improve body image and mental health in girls ages 9-15. She provided our girls and our program coaches with a safe and fun atmosphere to learn, explore, and experiment with their abilities. Our girls experienced many athletic firsts having participated in this work and we saw a huge increase in their confidence. We loved having the partnership with Mia, Eric, and Sean’s previous gym and are looking forward to Amplify Fitness continuing their excellent work in the Boston community.”

— Stacy Rodriguez-Rennard, LMHC

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