About Us

About Kin Fitness

At Kin Fitness, we know life is busy — and finding time for fitness can feel hard.

That’s why we’re here: to make movement easier, more enjoyable, and part of real life.

We’re a locally owned, family-run fitness studio in Newburyport, MA, built on the belief that workouts shouldn’t feel like a chore. Fitness should feel supportive, flexible, and sustainable — for every age and stage.

Get to know us...

Our Story

Kin Fitness was founded by husband-and-wife team Eric and Joelle McCaslin, who share a love for training and community.

As parents, they experienced firsthand how difficult it can be to stay active while balancing family life. What they missed wasn’t just exercise — it was belonging to a place that supported both health and connection.

That experience inspired Kin Fitness.

“Kin” means family, and that idea shapes everything we do.

What we do

We offer award-winning personal training, adult and small-group classes, and family-friendly fitness programs for all ages — from young kids and teens to adults and seniors.

Our certified trainers create a welcoming environment where everyone belongs:

Adults rebuilding strength or starting fresh
Parents fitting in workouts during busy schedules
Teens learning safe lifting techniques
Seniors focused on balance, mobility, and independence

Our focus is functional, real-life movement that builds strength, confidence, and long-term healthy habits — not quick fixes.

Why Kin Fitness

There are a lot of gyms out there. Kin is different.

Here’s why families and individuals choose Kin Fitness:

✔ Fitness for every age
✔ Certified, supportive coaching
✔ Personal training that starts with how you move
✔ No memberships required
✔ A welcoming, non-intimidating environment
✔ A true sense of community

We don’t believe fitness should feel exclusive or overwhelming. We believe it should feel achievable, encouraging, and sustainable — something you look forward to, not avoid.

Our Approach

At Kin Fitness, progress doesn’t come from pressure. It comes from consistency, education, and support. It’s about showing up, learning how your body moves, and building strength over time.

Whether your goal is to feel stronger, move better, manage stress, stay active as you age, or help your kids build healthy habits early, we’re here to guide you every step of the way.

No pressure. No judgment. Just smart coaching, flexible options, and a community that moves together.

Rooted in Newburyport

We’re proud to be part of the Newburyport community. We actively support local schools, families, and organizations through outreach programs, events, and partnerships. We’re more than a fitness studio, we’re a place to connect with your Kin.