More than a gym. More like a family.

Fitness. Fun. Results.

If you’re looking for lasting results, you’ve come to the right place.
We’re in the business of helping our members achieve their goals for life.

Welcome

01

Intro

Get started by booking your free intro.
02

Plan

Talk with a coach and make a plan.
03

Results

Start training, follow your program and get results.

Getting started is easy at the best gym in Boston, MA

At First Guess Fitness in Boston, MA, we believe that the path to reaching your goals starts with an actionable plan. Talk with one of our expert coaches to learn more about which program style will fit your lifestyle. Results that last are our specialty.

Core Programs

Personal training

Personal training is the most effective way to transform your body in the least amount of time.

JEFF’S STORY

Showing up for myself and then continuing to show up has made all the difference. It helped me feel better, look better, and be confident AF.

Janine’S STORY

I started going to AMP 2 to 3 times a week to do something good for myself. I was nervous at first but the coaching and community here is AMAZING. I c

Josh'S STORY

I saw such incredible success in improving my lifestyle and found myself eating better, listening to my body and looking better without a shirt on.

Achieve your goals with us

Take the first step in becoming your own success story.

Health apps with proven results?

What you do outside of the gym matters just as much as inside. Get our guide on the Top 6 Free Health Apps to help you manage sleep, stress, nutrition and travel.