The team

One team. Many trainers. One standard.

Every FitU trainer is held to the same three-part standard: competence in the craft, genuine care for the client, and results that actually last.

"Before FitU, I worked somewhere every trainer just ran their own random workouts, with no system behind it. If I ever had to hand a client off, I felt guilty, because I knew they'd still be working out, just not actually training. That's the moment this system was born."

Jack McDonald

How we build our team

No one leads a session without earning it.

Jack built this internship from scratch, and it's sharpened with every trainer since. Every trainer on this page came up through it, which is why the coaching you get doesn't depend on who's on the floor that day.

12–16weeks of internship
150+live sessions before certification
50 hrscoursework in 11 subjects
~3 hrsin-person final exam, pass required

Stage 1 · 50+ sessions

Shadow and grade

Interns sit in on live sessions and grade the trainer against our Session Checklist, learning the standard before they're asked to meet it.

Stage 2 · 50+ sessions

Lead the flow

They introduce and manage the flow of a session under a senior trainer's supervision, building the reps of running a room.

Stage 3 · 50+ sessions

Train and get critiqued

They train real sessions while a senior trainer critiques their cueing, programming decisions and how they handle the person in front of them.

How you're paired

One trainer who knows you. A team that never drops the ball.


Your primary trainer

Someone who learns you

We pair you with a trainer based on your availability. Session after session, you learn each other: where to push, where to pull back.

Full-team coverage

You don't miss a step

Every trainer can see every client's profile: your plan, your goals, where you're at. If your trainer is ever out, whoever covers already knows exactly where you left off.

"I've lost about 40 pounds, but more importantly, I've learned how to truly take care of my body. I'm constantly hitting new PRs and doing things I never thought I was capable of. My younger sister trains here too, and seeing both of our progress speaks to the quality of coaching across the board.
The energy, the people, and the support make it a place you actually want to show up to."
Kenzie Durham · trains with Christian

Meet the trainers

Who you'll be working with.


Jack McDonald, FitU trainer

Jack McDonald

Founder and Head Trainer

Jack has trained clients since 2014 and started FitU in a 400 sq ft garage in January 2020. He grew up overweight with a huge appetite, until an arm injury in high school sent him to a physical therapist who showed him he could change his body. Clients say he's best at helping them identify their gifts and find real food freedom. He and his wife, Olivia, have four kids.

"Your body is a gift worth caring for."

Justin, FitU trainer

Justin

Head Trainer

Coaching at FitU since November 2021. Justin's greatest strength is building meaningful relationships and helping clients discover their personal reasons for training, so together they can make intentional decisions that line up with their goals. Outside the gym, he's blessed with a wonderful wife and three children, and he loves reading, writing and spending his Sundays watching the Philadelphia Eagles after church.

"There's always an opportunity to improve your health, even if what that improvement looks like changes through different seasons of life."

Mike, FitU trainer

Mike

Head Trainer

Coaching at FitU since January 2023. Clients say Mike is best at motivating them to change for the better and challenging their mindset to match their goals. Outside the gym, he loves music and was once in a band.

"The roles we play in our lives are so impactful that when we excel in fitness, so does everyone in our lives."

Jason, FitU trainer

Jason

Trainer

Coaching at FitU since April 2024, after starting his internship in December 2023. Clients say Jason is best at answering their questions. Outside the gym, he's happily married with two wonderful children.

"Be consistent, have faith in the process, and you'll earn the results you want."

Christian, FitU trainer

Christian

Trainer

Coaching at FitU since November 2024. Clients say Christian is best at meeting them where they are and knowing when to push them, and he loves helping people work toward things they used to think were out of reach. Outside the gym, he's usually hoping for a Cowboys victory, teaching a fall prevention class, or hanging out with his wife.

"You're capable of more than you think, in the gym and in everyday life."

Peter, FitU trainer

Peter

Trainer

Coaching at FitU since July 2025. Peter was heading into his 30s, overweight and having never trained, when he had a wake-up call. Once he got his nutrition in check and started lifting, he found he loved it. Clients say he's best at keeping the big-picture goals in mind and connecting today's work to the longer journey. He grew up in San Diego and lived in Chicago for 10 years.

"Wherever you are, there's a path forward toward your goals."

Tom, FitU trainer

Tom

Trainer

Coaching at FitU since January 2026. Clients say Tom is best at listening to their concerns about an exercise and coaching them through it. Outside the gym, he loves watching football with his son, Knox.

"Leave stronger and more capable of handling life and anything you want to do outside the gym."

Brycen, FitU trainer

Brycen

Trainer

Coaching at FitU since August 2026. Full bio coming soon.

AJ, FitU trainer

AJ

Trainer

Coaching at FitU since January 2026. Full bio coming soon.

"My trainer, Justin, is incredibly knowledgeable. He pushes me to be better, helps me care more deeply about fitness, and coaches me throughout every fat-loss and maintenance phase."
Luke Weingart · FitU client

Ready when you are

Ready to get started?

A free call or text is the first step. No pressure, no sales pitch, just a conversation about where you are and where you want to go.