Better Together

Meet the founders

Two people, one mission

Every plan we build starts with two people who believe in it completely. Here's a little about each of us — and how we ended up building this together.

Milagros Caballero

Founder & CEO

Milagros was born and raised in Cereté, a small town in Córdoba, Colombia, where she grew up with a natural eye for fashion and a talent for designing clothing that seemed almost innate. In 2021 she left almost everything familiar behind — her home, her family, all but one sister — and moved to Colorado to chase a future she couldn't yet fully picture, carried forward by nothing but ambition, drive, and discipline.

Fitness found her in 2022, and something shifted. As she trained, friends around her started asking questions, then started training too — and watching them transform inspired her right back. That cycle of inspiration became the spark for Muscle by Mila. Once again, she chose to leap: leaving her job to build something of her own, the same way she'd once left her country to build a life in a place she'd never been.

Jonathan Thomas

Co-Founder & COO

A Colorado native, Jonathan grew up in the mountain town of Aspen, where he learned to ski at three years old and later graduated from Fountain Valley School of Colorado. Rather than follow the traditional college path, he went straight into sales — building a career across nearly every corner of the field, from B2B to door-to-door to remote. His focus today is business development.

Fitness found him in 2021 and never let go. Two years later he earned his NASM certification, coaching out of gyms across Colorado and Montana. So when Milagros was ready to leave her job and bet on herself, Jonathan didn't hesitate — he was fully behind her, ready to help build the business she'd dreamed of.

Our story

Milagros and Jonathan met as two people already in motion — she'd just rebuilt a life in a new country; he'd already learned that the unconventional path can be the right one. What they found in each other was a shared refusal to settle: her discipline meeting his hustle, her willingness to take the leap meeting his readiness to back her completely.

When Milagros decided to leave her job and build Muscle by Mila from nothing, Jonathan didn't just support her — he became her partner in it, bringing the instincts of someone who'd spent years learning how to sell, connect, and grow a business. And in turn, her discipline and drive pushed him further into the fitness world he'd only recently fallen for, all the way to his own certification.

That's the heart of Muscle by Mila: two people who keep choosing each other's dreams as their own — and who believe the same is true for you. You go further, and get stronger, when you don't have to do it alone.

Ready when you are

Let's build something
that lasts

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Two people, one mission

Milagros Caballero

Jonathan Thomas

Let's build somethingthat lasts

Let's build something
that lasts