Try a free class or come in for a consultation.

Watertown: Crossfit, Weightlifting, Fitness Center


Get Started At CFA!

Getting started is easier than you think. Whether you’re looking for Crossfit, Olympic lifting, or Personal Training, we offer what you want. Not sure where to get started? Come in for a free consultation.

Get Started


About Us

We’re conveniently located at 39 Clarendon Street, Watertown, MA. (Just a short distance from Target) in a 3,000 square foot warehouse gym where members become friends and get fit together.

Learn More


The Owner & Head Coach

Jason Gee is head coach of CrossFit Arsenal and has been CrossFitting since 2007. His professional training experience is varied and consist of a number of specialized training methods and certifications.

Coaches & Staff
Get Started

Ready To Join?

We're Excited to Have You Join Our CrossFit Community In Watertown.
Get Started

Today’s WOD

WOD Sunday 2.12.2017

February 11th, 2017|0 Comments

2K Row


Go Support Your Fitness Friends at Crash B’s!!


From The Blog

WOD Monday 12.5.16

December 5th, 2016|0 Comments

Strength A. Bench Press 5x5 Up B. Pendlay Row 5x5 Up Metcon AMRAP3 Wall Balls 10ft all 20/14 Rest3 AMRAP3 Burpees Rest 3 AMRAP3 Toes to Bar

Why I CrossFit: Spikes

September 9th, 2016|0 Comments

I admit it, I have put off writing this post for a good while now. I’ve been thinking, of the various reasons why I do CrossFit. Reasons like, “Cause I’m getting older and don’t want to feel like I am”, or “Cause, I love ice cream and would marry if it was legal…”. Maybe I