Josie Gualtieri

Josie Gualtieri is twelve years old, starting sixth grade, and she is going to play in the WNBA. She'll tell you that without hedging. Not "I hope to" or "I'd like to." She's going to. And she trains like someone who has already decided.

At least an hour and a half of basketball every single day. Soccer on the side. And running — a lot of running. In 2025 she ran the Hot to Trot 5K in Upton in 19 minutes and 16 seconds. Read that again. Nineteen sixteen, at ten years old. That's the number she's proudest of, and it should be.

It's also the number that tells you exactly how she ended up here.

The Problem With Being Unstoppable

Here's the thing nobody tells you about a kid with that much drive: the drive itself can become the injury. Josie was running nearly every day. She was playing every day. Nobody had to push her — that was never the issue. The issue was that a growing body has a ceiling on how much load it can absorb, and Josie was living well above it.

Her parents, Ellen and Mike, saw it coming. They tried to help — suggesting better exercises, trying to dial back the volume. It went about how you'd expect.

Then came the stress fracture. Her tibia. The bone gave out under the accumulated load of doing the thing she loved too often, with no recovery built in around it.

Five months. No basketball, no running, no soccer. For a kid whose entire identity is wrapped around a sport, five months is not a setback. It's an eternity.

"We Didn't Want to Repeat the Same Cycle"

This is the part of the story I want every parent in Westborough to read carefully.

When Josie was cleared to start moving again, her parents had a real problem. They couldn't just send her back to running every day — that was the thing that broke her. But they also weren't willing to tell a driven kid to want it less. Telling her to dial back her ambition was never on the table, and honestly, it wouldn't have worked anyway.

So they went looking for a third option. Mike picked up the phone.

Coach Steve Cimino started building her back — not as a runner who needed to rest, but as an athlete who needed to get strong. Strength training. Real loading, coached properly, scaled to a body that was still growing.

And critically, Steve didn't just coach Josie. He coached the whole family.

What Actually Changed

The obvious answer is that she got stronger, and her training log says exactly how much. In early March she got six strict chin-ups on her first set, then four, then four. By September she was opening with twelve and holding nine and ten on the back sets. Her farmers carry went from 25 pounds in each hand to 40. Her dumbbell bench went from 20 to 30 per hand. She went from squatting a 36-pound kettlebell to loading a barbell. In June she ran ten hill sprints and got under 18 seconds on every one.

On the court she's faster and shiftier, and she can feel it in games — she keeps up, she stands out, she doesn't fade.

But the more important change is quieter than that.

Josie used to be fixated on cardio — more running, more miles, more days. She's learned that a bike session counts. That one track workout a week and some hill sprints is cardio. That the conditioning she was chasing with volume, she can build with quality instead. She doesn't run every day anymore, and she's a better runner for it.

She's also gotten comfortable with rest days. If you have ever tried to convince a driven twelve-year-old that doing less will make her better, you understand what an achievement that sentence represents.

There's one more thing Ellen noticed, and it might be my favorite detail in this whole story: Josie has more time to hang out with her friends now. She's training smarter, so training takes less of her day. She got better at her sport and got some of her childhood back at the same time. Those two things are supposed to be in conflict. They aren't.

She Started Coaching Herself

Josie writes notes to Steve after her sessions. Hundreds of them. Most are what you'd expect from a twelve-year-old — what was hard, what was easy, what weight she wants to try next time. But two of them stopped me cold.

The first was in March, about six weeks in. She wanted more running in her program, and here's how she asked for it:

She's asking for more work — and in the same breath, telling her coach which kind of work she's no longer willing to do to herself. That's a kid who has internalized the lesson instead of just being handed the rule.

The second was in April:

Nobody told her to do that. She felt something in her body, moved her rest day forward, and moved her training day back.

That is the whole thing. That's what Ellen and Mike were actually after when they made that call. Not a workout program — an athlete who can manage herself, so that the next twenty years of chasing this dream don't cost her another five months.

Who She's Watching

Ask Josie who motivates her and she doesn't only point at a screen.

Rachel Carpenter is a Westborough High graduate, class of 2025, who now plays college basketball at Skidmore. She's someone Josie can actually watch — a hometown player a few years ahead of her who kept going after high school. Josie doesn't just have posters on a wall. She has a local example of the next step.

What's Next

Two short-term goals: win the Westborough Turkey Trot, and start for the Bay State Jaguars eighth-grade basketball team this fall.

The Turkey Trot matters more than it might look. Josie hasn't raced since that 5K — her parents haven't allowed it, and she has been extremely vocal about how she feels regarding that decision. It was the right call while her body rebuilt. But this fall she gets a bib number again, and if you think she isn't counting the days, you haven't been paying attention.

And the Jaguars team she's aiming to start for is eighth grade. She's entering sixth. She's playing up two years. Of course she is.

If This Sounds Like Your Kid

If you're a parent watching a kid who loves their sport so much they're doing damage with it — who won't slow down, won't take a day off, and doesn't want to hear it from you — this story is for you. If you've already been through the injury and you're staring at the return and terrified of ending up right back here, this story is especially for you.

You do not have to choose between your kid's health and your kid's ambition. That's a false choice, and it's the one most families get stuck on. The third option is coaching — someone who takes the goal seriously enough to build the body that can actually survive chasing it.

Josie came to Prototype because she couldn't run. She stayed because she found out she was more than a runner — she's an athlete, and athletes get built, not just used.

"I enjoy working with Steve and becoming stronger and just being at the gym. I love to get these workouts in — they feel great."

Book a free No Sweat Intro. Bring your questions about your kid's training load, their sport, and their goals — we'll build a plan that respects all three.

I don't know Josie that well — I don't coach her — but I see her in the gym. Head down, grinding, working. You can feel the energy in this place, and what I've noticed about Josie is that she has a quiet intensity about her. I've never seen someone her age be this dedicated to a mission before.

You hear stories of great athletes that have that internal drive, and she seems to be one of them. I'm excited to see Josie continue her journey and her development. I believe her ceiling is limitless, and I'm glad she found us and is learning at a young age the importance of recovery. Keep up the great work, Josie!

This story was developed through written responses submitted by Josie and her mother, Ellen, and shaped with the help of AI writing tools. The facts, quotes, and experiences are their own — AI helped organize and present them in a format worthy of the story she's lived.