Locations

Just B Fitness
Mill Valley, California

- Ruck Evolution National R & D Center -

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Just B Fitness, led by Bria Ruben in Mill Valley, CA, serves as the official Research & Development center for Ruck Evolution. Specializing in outdoor group ruck classes, Just B Fitness helps clients achieve lasting physical health in a supportive and energizing environment.

Bria’s mission is to empower individuals to live their fullest lives by enhancing their physical well-being and maintaining independence as long as possible.

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A passionate fitness enthusiast, mother, nature lover, and advocate for sustainable living, Bria brings her love of the outdoors to every session. Her classes emphasize fun while building strength, cardiovascular endurance, balance, flexibility, and breath-work through functional movement.

Certifications:

• Ruck Evolution Master Instructor (REMI)

• Certified Recreation Therapist (CTRS)

• ACE Group Exercise Instructor

• MADDOG Spinning Instructor

• American Heart Association First Aid, AED, and CPR

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Coming Soon: Boulder, Colorado

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Coming Soon: Santa Monica, California

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