About
Boom! Athletics

Our Coaches

I really enjoy working with Sean at Boom! Athletics. Everyday is a new challenge and I am breaking my PRs every workout. My strength is improving dramatically and I can never wait for the next workout. I’ve never been so excited to go to the gym! Something different everyday, never the same workout. I recommend Boom! to anyone looking for positive results in a small gym atmosphere with one on one training. Boom!

- Kevin J Brasseur Read Reviews

Our Programs

Strength, Conditioning & Mobility

Looking top build your strength and feel healthy? Our personal, buddy, and group training classes are taught by friendly expert coaches and provide a comprehensive yet flexible workout regimen that makes you look and feel great.

Explore Strength

Martial Arts

Gain a respect for the combat arts that every person should experience in their life. Martial Arts are an incredibly fun and gratifying form of personal development, amplifying self confidence and self control.

Explore Martial Arts

A few months ago, I was new to the area and looking for a gym. In every city, there are the typical $10-$40/month corporate gym options. You can go in, do what you need to do, and leave – without ever having to speak to somebody. That’s okay. People do it. And sure enough; I was close to doing it all over again.

Then I found Boom. And I’m so glad I did.

Boom will push you. It will engage you. It will demand you interact with others and yourself. But I promise you: if you are getting tired of trudging through the aimless, goal-less, cookie cutter gym routine and want to take your fitness to the next level, Boom is, without a doubt, the best bang for your buck.

The gym’s owned by Sean Seaberg, a local Haverhill guy, and he’ll personally work with you to identify and achieve your goals. After spending just a month with Sean, I’m so glad my money is going to his business and back into the city of Haverhill.

Seriously – one of the best kept secrets in the Valley. If you want a higher fitness awareness; knowledge, and engagement, at least visit Boom and consider its model. I’m so happy I found it.

- Marcus Privitt Read Reviews