2026-01-02T16:26:38.243Z

2025-12-29T13:25:45.544Z

Xtreme Fitness is such a wonderful addition to the Harvard community. They provide a very welcoming environment for all levels of fitness; beginners, local sports teams, those who have been working out for many years and also those looking to stay sharp later in life. The space is always improving, expanding and offering new options. Jill and Gerardo continue to create a fun environment for people to better their lives with fitness, nutrition and friendship. Classes are offered for both early risers and those who prefer later afternoons. They accommodate the needs of their patrons and truly care about each person who walks through the door. Expansive healthy food and drink offerings at the cafe just add to the overall experience. The tea drinks, protein shakes, protein cold brews and baked goods are all top-notch and reasonably priced.

2025-12-26T18:34:31.001Z

Jill and Gerardo run an awesome gym! Always something different to keep my body guessing at the 5a class too. Great group of people at the gym. Highly recommend.

2025-12-24T00:37:50.863Z

What a great community. No matter where you are in your journey Jill, Gerardo, and members are there to support you and motivate you.Best gym around! Great variety of classes and options to get you to the next level. Karen is a fantastic trainer also.

2025-12-20T15:54:17.064Z

I have been a member with XFN for almost 2 years now. I started with Zumba and then joined full time. It was one of the best decisions I’ve ever made. This place is not just a gym it’s a family a great community to be apart of. Jill and Gerardo have made it such a safe and non judgmental place. Working out alone for me was hard and being able to have the guidance and verity of workouts has been great! If you are debating on joining don’t just do it!!

2025-12-16T14:13:56.650Z

I always feel motivated and pushed to get the most out of my workout! Great classes & instructors and awesome people in the classes that make working out something I look forward!

2025-12-12T02:32:45.796Z

Best place to workout! Had been looking for a place to get myself moving again, I’m so glad I walked through those doors, I have not only pushed myself to reach many goals but also found such a great community!

2025-12-11T16:44:11.575Z

I’ve been coming to Xtreme Fitness since high school and through my college years, and they have truly been wonderful. The staff is always friendly, welcoming, and willing to help. They offer a great variety of equipment and classes, so there’s always something new to keep me motivated.What I appreciate most is how much they support the community, it really feels like more than just a gym. I’m grateful for a place that cares about its members and the town it serves. Highly recommend!

2025-11-20T16:42:32.702Z

Jill Alvarez always offers a variety of exercise activities/routines every day. Each day we begin our session with a set of warm up core exercises, followed by a specific set of exercises designed to strengthen a specific set of muscles and/or the entire body. From Tuesday's Legs Day, to Wednesday's Total Body, to Thursday's Arms/Shoulders' Day, alobg with every day cardio exercises, Jill offers sessions that get at toning,strengthening and building total body endurance. As a 70 year old man, U've never been so fit in my entire life... owing it all to Jill and Gerardo and the exercise offerings at Xtreme Fitness. And I didn't even mention the various boot camps (deadlifting, basic barbell, abs) I've also attended. Jill trult offers a complete menu of exercise options, that are always adapted to a person's fitness level. I could go "on and on" about the health and fitness level improvements I've gained under Jill's coaching and guidance, suffice it to say, she's TRULY changed my life!