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Open 24 hours
28B Nashua Rd, North Billerica
Gyms
“Clocked in for a pull day. Signed up the day before. Equipment was awesome and the environment definitely speaks volume in terms of locking in on your workout, especially for early birds like me! Totally recommend.”
5:30AM - 7:30PM
10 Upton Dr #7, Wilmington
Gyms
“Totally enjoy this kind of workout. For me It is perfectly designed to fit my fitness goals and then some! Great staff and work out group! Glad I was introduced to the team!”
5:30AM - 8PM
930 Main St, Acton
Gyms
“I highly recommend Mason if you are dealing with an injury that's interfering with your training. I've had recurring lower back and shoulder pain over the years. I met with Mason and he identified the movement patterns contributing to the pain, took the time to explain why I would be feeling pain, and created a warm-up program to address the root causes and allow me to move more freely in my workouts and in everyday life. Thanks Mason!”
“OTF Concord is amazing! I’ve only been going for a few months but this studio has completely transformed my approach to fitness/working out. Every single coach is outstanding — high energy, friendly, attentive, motivating, and supportive. I feel my strongest, both mentally and physically. Thank you to Krysta, Julianne, Mallory, both Taylors, and all the staff at OTF Concord for helping us all be healthier!”
Open 24 hours
7 Summer St #5, Chelmsford
Gyms
“Great place been going for about 2 months going three times a week and already feel more fit. Trainers are positive and it’s easy to get a great workout in in just 30 minutes.”
5:30AM - 8:30PM
65 Wiggins Ave, Bedford
Gyms
“I have been a member for so many years that I don’t even remember how long! I really appreciate have consistency and reliability at the front desk with Laura Keating. It is obvious she cares, does her job well and goes above and beyond!”
“Orangetheory or should I say Orangetherapy is the only way to start the day- positive vibes and pumping tunes- have been to locations in several states and London and Woburn is my favorite!”
“Couldn’t recommend this place more! I joined knowing that I needed a consistent routine that I couldn’t keep on my own, and I am so glad that I did. It is such a great community in Westford with fantastic staff. You are always greeted with a smile here. I have gained so much confidence and strength these past several months and always leave with a great boost of energy for the day! Thank you OTF Westford!”
5AM - 6:30PM
112 Burlington Mall Road, Burlington
Gyms
“I started orange theory earlier this month and love it. My first class was with Emily who was great at showing me the ropes and making sure I had the movements down. Only down side is if you work later I to the evening like I do you may be limited to early morning work outs - thankfully BG carries enough energy for everyone and gets your day started the right way.”
4:30AM - 7PM
1934 Lakeview Ave bldg 7, Dracut
Gyms
“Love this gym ? it's small but everyone is friendly and I look forward to my gym sessions. There's a decent variety of equipment and it never feels like people are fighting over stuff or waiting a long time for something.”
5:30AM - 6PM
15 Wall St, Burlington
Gyms
“Lori and her team of CFE Fitness coaches have been my go to fitness haven away from home. Coming from Europe and spending restricted time in Burlington during our yearly family vacations, I am so grateful to CFE Fitness for enabling me to train seamlessly, for being so accommodating towards my timings, set-ups and goals as well as for creating a generally welcoming and thriving environment for any athletic ambition. Thank you so much, highly recommend - definitely coming back!”
6:30AM - 5:30PM
423 Great Rd, Acton
Gyms
“*****2nd Review written in September 2025.. I successfully finished the AV1 in the Dolomites this summer. I am grateful to Jazzercise for adequately preparing me for this physically demanding hike. As someone who does not typically hike, like myself, having completed two successful 10-day intensive hiking trips in Europe, I strongly recommend Jazzercise to individuals who are preparing for hiking.
****1st Review written in February 2025. Since joining Jazzercise Acton Center in 2018, I've achieved a great level of physical fitness. Jazzercise has enabled me to tackle challenging hikes, including a 10-day Tour du Mont Blanc hike through France, Italy, and Switzerland in 2023. I'm looking forward to another 10-day hike in the Dolomites, Italy this summer. I'm grateful for the wonderful and supportive Jazzercise teachers and classmates. As always, l love to go to the classes.”
“The workout itself is all encompassing for strength and cardio, focusing on targeted areas or muscle groups. What sets the studio apart is the great coaches and staff.”
“I have been a client at Activate since it’s start and feel that Julie and Daniel are the best in the business. They have extensive knowledge of fitness and how to train and the experience to know when to push me to do better without injury or real discomfort. Activate is a very unique little gym that is personal, private and quiet. I am an older client who feels very safe in their workout environment and with them. Working on both my fitness and nutrition with Julie and Daniel is a seamless overlap and gives me the motivation and accountability I need. Having regular scheduled appointments works best for me and their facility is convenient, well equipped and set up for all types of training and fitness work. They make it fun. Nancy N”
5AM - 9PM
40 Ray Ave, Burlington
Gyms
“Polite staff that always greets you with a smile. Gym is very clean and the environment is fun and inviting. Space is a bit small and it can get very busy during peak hours which can interfere with my workout sequence. However, plenty of equipment to mix things up which is good for growing muscles.
Lot’s of young people working out which is great to see. They spend too much time on their phones between sets LOL but it’s all good. Management and staff are working to mitigate that and it’s improving. I like seeing the kids striving to be healthy and improve their mental and physical fitness.
Machines are great for isolating certain muscle groups and stabilizing for a better pump. Good equipment. Good people, positive vibes. I look forward to my PF daily workouts.”
“Not my home PF, but I come here often. It's fairly clean. Not as many dumbbells as my home location. They have actual vertical Smith machines in addition to those with the 10° angle.”
5AM - 9PM
476 Lowell St, Methuen
Gyms
“One of the best places to take your kids or young student-athletes. They have way of training that will keep them engaged and focused. They know how to tab into the individual athlete to get the best out of them.”
5AM - 6:15PM
475 Boston Rd, Billerica
Gyms
“By far my favorite gym! The owners awesome and hands on. 24 hour access for members, multiple options for programming, classes, or work out on your own. I would highly recommend this gym!!”
9AM - 4PM
360 Merrimack Street suite 368, Lawrence
Gyms
“We tried out a few different gymnastics places for my 18 month old son and ready set go is by far my favorite ! Mr. Steve does an amazing job setting up the class for the kids. My son loves everything : obstacle courses, bubbles, challenging himself on the balance beam or rings. Mr Steve has even taught us useful sign language . This place is a must try !”
5AM - 9PM
480 Boston Rd, Billerica
Gyms
“This was my first time visiting this location. The club was clean and well- maintained and the employee at the front desk was cleaning but still attentive when we came in. Music level was reasonable, too. We had a great workout, thanks :)”
12AM - 10PM
50 Pleasant St, Dracut
Gyms
“Im very happy with this gym they prices very affordable very clean no complaints I been a member before left for reasons but im back I always will recommend this place!!!”
Open 24 hours
72 Burnham Rd, Andover
Gyms
“Small, not crowded and fun for the younger children. The reason I didn't give 5 stars is there are a ton of ticks here. I don't think the town sprays to prevent them and I've had to remove multiple off of myself and my children even when using deterrent spray prior to going.That being said, I do bring my kids here often, I use spray on myself and them, and do multiple tick checks on them while playing. Great little Park though.”
Open 24 hours
315 Middlesex Rd Units 6 & 7, Tyngsborough
Gyms
“This is a great gym. Easy location right off the highway. Equipment is new and kept up to date. Wide array of weights dumbells, kettlebells, machines. People who work there are so nice - and same goes for people who work out there. Check it out !”
5:30AM - 7:30PM
1100 Gorham St, Lowell
Gyms
“Merrimack CrossFit is hands down one of the best CrossFit gyms around! The atmosphere is electric—positive, motivating, and welcoming to all fitness levels. The coaches are incredibly knowledgeable, attentive, and always willing to help you improve your form, technique, and overall performance, they push you to be your best while keeping things safe and fun. The community here is amazing—everyone is supportive, friendly, and truly makes each workout an enjoyable experience. If you're looking for a top-notch CrossFit gym, this is the place to be! Highly recommend!”
“I had a massage from Sammy. I thought he was really knowledgeable about the human body & musculature. He shared some recommendations for things I can do at home to assist with circulation & nerve pain. He was very thoughtful in his techniques, how he adjusted my limbs for different massages, and was attentive to my needs for pressure and comfort.”
“I love this gym for sure, but today when I went to take a shower and get to see worms on the floor I did no feel good about it where is the cleaning services doing ?”
7AM - 7PM
4 Littleton Rd, Westford
Gyms
“I really like this place. It's very clean and it has everything. Shawn and the staff are great. If you don't want to be in a gym where it's overcrowded with people taking their tripods out and video taping themselves when you just want to get a set in. Westfit is your place. Check it out.”
6AM - 8PM
18 Adams St, Burlington
Gyms
“I saw one of the PTs at Movement Workshop, Taryn, when I had a running injury that wasn't getting better with rest. In addition to manual therapy work, she built a progressive mobility and strength program that has my runs feeling better than than have in years. She understood my goals and was able to make the home program work with the equipment I already had. We were also able to address areas that weren't specific to what I thought was the injured area. Although I'm done with PT, I'm looking forward to continuing to work with with Taryn in the small group training sessions.”
6AM - 5:30PM
83 Parkhurst Rd, Chelmsford
Gyms
“Dating back to when I think I started at Jazz (2017), THE BEST DECISION I’VE EVER MADE! From the instructors, the classes, the music, the positive energy & dancing next to all of you on the dance floor, AMAZING! Try it, you’ll LOVE it!”
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“I think my choice of going from yoga to power lifting speaks volumes for the gym and the coaches. Ashlyn is terrific -- warm and hard driving at the same time. She won the 2023 MA power lifting championship, and her coaching is focused on the techniques that over time mean the difference between injury and progress. Coming to the gym has been the highlight of my week!”