Train Anywhere with BoxMatrix

BoxMatrix is Marr Strength’s online training solution — giving you access to the same proven method we use with our athletes in Southlake, Texas. Whether you’re training remotely or just want to follow a structured system that works, BoxMatrix delivers.

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How it Works

  • Step 1 - Inquire to Get Started

    Fill out the inquiry form so we can learn more about your goals. From there, you'll receive onboarding instructions.

  • Step 2 - Begin the Foundations Program (6 Weeks)

    Everyone starts here. This six-week training track is designed to develop mobility, balance, and core strength - critical for injury prevention and long-term performance.

  • Step 3 - Progress into Weekly Training

    Once you have completed Foundations, you will graduate in the Workouts of the Week — five new training sessions uploaded every week, mirroring what we do inside Marr Strength.

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What is Included

- Six-week Foundations Program


- Weekly updated advanced workouts


- Access via browser or the BoxMatrix app


- Targeted warm-ups, upper/lower body templates, and recovery routines


- Community features to engage with our team and other members

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Who It Is For

BoxMatrix is for athletes, professionals, and everyday individuals who:

  • Can’t train at Marr Strength in person

  • Want to follow a proven, results-driven system

  • Value injury prevention, longevity, and performance

  • Prefer structure and progression in their training

Get Started

Submit Inquiry

Once we’ve reviewed your submission, we’ll send you everything you need to get started with BoxMatrix.