A Gill’s Fitness trainer applying hands-on resistance to a smiling client

San Diego’s personal training specialists

A personal approach.
A stronger you.

Expert personal training in San Diego since 1992. Science-driven. Hands-on. Built around you — and the life you want to live.

5.0 on GoogleTrusted in San Diego since 1992
See the difference
Mission Valley, San Diego
1992Helping San Diego
get stronger since
2–3Hours per week.
A smarter approach.
100+Testimonials.
Real people. Real progress.
1:1Personal attention.
A whole team behind you.

The Gill’s Fitness difference

Not just a workout.
A better way to train.

No crowded gym. No one-size-fits-all routines. Just a proven, personal approach to exercise — in a private space where you’re known by name.

A trainer guiding a senior client through hands-on resistance training
Our trainers are the machines.

Personal resistance. Precise movement. Your pace.

Safer by design.

Expert hands-on guidance. Resistance that adapts to you. Every movement is designed around your body and your abilities.

Science. Not guesswork.

Our Advanced Exercise Science method emphasizes the eccentric phase of movement to effectively challenge your muscles.

More life. Less gym time.

A focused approach designed around just 2–3 hours a week. Make meaningful progress without making the gym your second home.

Find your kind of stronger

How it works

Your goals.
Our expertise.

01

We get to know you.

Your goals, your history, your life. Your program starts with a conversation, not a template.

02

We train with intention.

Our team applies hands-on resistance, adapting each movement to your strength and ability.

03

You build lasting strength.

A consistent, focused routine helps you move better, feel stronger and keep doing what you love.

Training for your life

Whatever your starting point.
Let’s move you forward.

From teen athletes to active retirees, every person has a different reason to get stronger. We build the training around yours.

Gill’s Fitness client building strength with personal guidance

Strength for life

Build strength, improve balance and posture, and move through life with more confidence.

Personal training · Osteoporosis · Balance

Client exercising with a trainer in Gill’s Fitness private gym

Recover. Rebuild. Thrive.

Individualized rehabilitation, prehabilitation and exercise therapy for your next chapter.

Rehabilitation · Prehabilitation · Sports therapy

Trainer applying hands-on resistance to a young athlete

Perform at your best

Purpose-built training for your sport, from a stronger golf game to athletic performance.

Golf · Sports-specific training · Core strength

Also in your corner:Nutritional adviceWeight lossMuscle tonePosture correction

People who care. Expertise that counts.

A whole team.
In your corner.

Founded by Jonathan Gill, our seven-person team brings decades of experience and a shared passion for helping you thrive.

You don’t train with just one trainer. You train with a team — for fresh perspectives, personal attention and flexibility.

Come meet your team
Jonathan Gill

Jonathan Gill

Founder & Program Designer

Robert Fine

Robert Fine

Trainer & Program Designer

Ryan Hughes

Ryan Hughes

Trainer

Mikayla Devries

Mikayla Devries

Trainer

Also on your team: Tyler Smith, David Misrahi & Dustin Abrams.

Stronger together

Real people.
Extraordinary commitment.

Some of our clients have been with us for more than 30 years. These are more than success stories. They’re the reason we do what we do.

Training three hours a week since 1998, Dr. Rumsey made prehabilitation part of his routine. Following triple bypass surgery in 2011, he returned to his workouts in four weeks.

GR
Dr. Gene RumseySurgeon · Client since 1998

Alex began training to protect his pitching arm at just 14. He went on to earn a scholarship to UC Berkeley and was drafted by the Minnesota Twins. His parents train with us, too.

AS
Alex SchickAthlete · Started at age 14

Living with mild cerebral palsy, Sergey began his training journey at 32. With our hands-on method, he improved his body composition, going from a 34-inch to a 29-inch waist.

SN
Sergey NosovClient since 2008

Individual client experiences, summarized from their stories. Results and recovery times vary.

Your neighborhood. Your private gym.

Right here in
Mission Valley.

A spacious, private gym. A welcoming team. A place to focus on you. We’d love to show you around.

LET’S TALK

(619) 299-1988
A trainer and client inside Gill’s Fitness private Mission Valley gym
Independently owned. Personally invested.Get directions

Your stronger next chapter starts here.

You bring the goals. We’ll bring the expertise. Let’s start with a conversation.

Let’s Get Started