Personal Training in Downtown Boston

Stop Guessing. Start Training.

Boston's Best Semi-Private Personal Training Gym.

In-person coaching, online programs, or free tools — we meet you where you are.

How It Works

1

Book a Free Intro Call

Quick conversation to learn about your goals and see if we're the right fit.

2

Tour & Assessment

Visit the gym, meet the team, goal assessment, movement assessment & mini workout.

3

Join the FGF Family

Start your journey with a coach in your corner and a community behind you.

Why This Gym Works When Others Didn't

We're a small group personal training gym in Boston, near Downtown Crossing, built to remove guesswork, build consistency, and make strength training feel normal and safe.

Clear Guidance — No Guesswork

You shouldn't have to figure out workouts on your own. Every session is coached, structured, and planned so you always know exactly what to do.

Built-In Accountability

Most gyms rely on motivation. We rely on structure, scheduling, and coaching — so consistency doesn't fall apart when life gets busy.

Strength Training Without Intimidation

Learn real strength training in a supportive, non-competitive environment — without feeling judged or out of place.

A System That Actually Works

You get the attention of personal training with the consistency and community of a small group — all designed for real adults with real schedules.

Choose How You Want to Use Our Training System

The same coaching and structure — delivered in different ways.

In-Person Training

Train at our Boston gym with a coach-led, structured program that removes guesswork and builds consistency week after week.

Book a Free Call

Online Coaching

Get the same structured programming and accountability — delivered remotely with check-ins to keep you consistent wherever you train.

Book a Free Call

Free Training App

Explore our training approach with AI workouts, tracking, and community — a low-pressure way to get started.

Try Free

What Our Clients Say

KE

Kim

"I could not love it here more. Patrick and Justin are incredibly skilled and patient coaches. Butt kicked? Yes. But also so helpful for sustainable fitness."

GG

Gabe

"FGF is fantastic! The small class sizes ensure you get the attention you need, especially when it comes to form. Justin and Patrick are amazing coaches who run excellent classes and truly create a welcoming environment. The facility is well-managed, and everyone makes you feel at home. Highly recommend!"

GK

Gaya

"First Guess Fitness has been a great place for my strength fitness journey. Justin & Patrick do an awesome job balancing exercise, accountability, and fun (especially when Scout shows up!). They look out for your form, help you push yourselves to meet your goals, and keep class engaging."

Book Your Session

Choose a time that works for you and get started today.

From Our Blog

Tips, insights, and stories to help you on your fitness journey.

Read Our Blog

Ready to Get Started?

No pressure. Just a conversation about your goals.

Book Your Free Call