Youth Athletic Performance

Help your athlete become faster, stronger, and more confident through age-appropriate performance training.

We help athletes improve speed, strength, power, agility, mobility, and movement quality through expert coaching—all while building a strong foundation for long-term athletic development and injury resilience.

For athletes ages 8+. No experience required.

Ready to get started? Tap “Start Here” to schedule your athlete’s evaluation.

530-217-3154
G-Theory CrossFit
345 Sacramento Street Unit-G
Auburn, CA 95603 (view larger map)

4.9

34 reviews

Kris Janssen


2 years ago

Coach Ginger, owner of G-Theory, has literally changed my life. As a 66 year old woman, I entered Cross Fit with some trepidation. It didn't look like other gyms. There were no machines plugged into outlets and all around me were weights, barbel

Loren Schneider


6 months ago

G-Theory CrossFit is the kind of gym where you can tell people genuinely care. The coaching is thoughtful and approachable, with clear explanations and intentional scaling options so everyone can train hard at their own level. The workouts are ch

Matthew Smith


8 months ago

I’ve been part of a handful of gyms over the years, and G Theory CrossFit has been the best! The community is amazing, and whether you’re new or experienced, you instantly feel welcomed. It honestly feels like a family, which is something I

Claudia S


a year ago

I heard about this gym while I was in physical therapy for a shoulder impingement. I quickly learned that it is through exercise and movement that injuries heal - not through non-movement. Ginger and all the excellent coaches provide alternative

Kimberly Dougherty


8 years ago

I am a beginner at crossfit and was a bit scared about how things were going to go for me with it. I LOVE IT! Ginger is a great instructor. She cares about teaching the basics so you learn the proper forms. Everyone that I have met there is suppo