Safe. Effective. Efficient.

By utilizing motorized resistance instead of traditional weights—and tracking progress via software—ARX (Adaptive Resistance Exercise) is changing the way people exercise. The result? Better workouts in less time with fewer injuries.


ARX technology training at LUMEN can help you efficiently train and upgrade your body in a way no other machine can. ARX provides the ideal resistance, regardless of your fitness level, which gives you the ability to maximize effort at each repetition.


Call now or sign up online to schedule your FREE demo session.



Discover ARX

This video explains how ARX is shaping what the future of exercise will look like.    PLAY>


ARX - The Future of Exercise

A great introduction to Adaptive Resistance Exercise technology.   PLAY>



Experience the unparalleled safety of perfect resistance.
  • No Weights to Drop

  • Controlled Speed of Motion

  • Perfectly Matches the User

  • Stop at Any Time Without Risk


Experience the perfect rep, every rep.
  • Enhance Muscle Tone and Increase Muscle Mass

  • Improve Bone Density

  • Maximize Strength

  • Optimize Metabolism


Get the results you're looking for in a fraction of the time.
  • Full-body Workout in Minutes

  • Get Better Results in Less Time

  • One Machine, Maximum Convenience

  • No Adjustments, No Hassle



Get the results you're looking for in a fraction of the time.
  • A complete workout in 15 minutes per week!

  • Personalized training to reach your goals.

  • Measurable results logged in a personal digital account

  • More free time to enjoy the extra strength and energy!


Benefit from the cutting-edge fitness technology

of Adaptive Resistance Exercise: 




ARX Demo Session  $5

You have to FEEL it to believe it! FREE with discount code "ARXDEMO"

ARX Private Training Session  $65

Your Once a Week Fitness Fix!


ARX Basic  Schedule a consultation

Includes 4 private training sessions per month.



The Day of Your Appointment

  • Arrive 10 minutes before your appointment.


  • Wear comfortable clothing. Gym clothing is not necessary but you will want to be able to move freely. 


  • Allow 30 minutes for your training session. Though we often complete the workout within 15 minutes, we like to have time to make sure you get what you need. You also might need a few minutes to recover!  


  • Nutrition: Depending on your goals, we can recommend a regimen to help you with muscle recovery and/or growth.

For NEW ARX Clients
  • We are happy to introduce you to ARX and put you through a few exercises. Once you feel it for yourself, you will quickly understand why ARX is an incredible tool for health and strength. Bring a friend to cheer you on and they will want to try it too!


  • When you decide to start training with us we will start with a consultation to discuss your goals, make note of any injuries, and decide on a plan to start you off with. Whatever your goals, incorporating ARX into your health regimen is a great tool to help you get there faster.


  • For clients that want to track their progress in greater detail we recommend getting a body composition analysis (Hydrostatic Weighing or BodPod) to determine percentages for body fat and lean mass. This test can be done through UNM. See exphyslab.unm.edu. Bone density testing should also be done if you'd like to track that metric.



Find answers to Frequently Asked Questions here!


How does ARX work?

ARX is strength training and body development using finely-tuned motors as the means of resistance instead of weights . These motors allow ARX to provide “adaptive resistance;” resistance applied to the user only in response to their own effort. ARX provides safe, controlled, immediate, infinite, and quantifiable resistance that is of a higher quality than is currently possible with the out-dated, gravity-based systems found in gyms worldwide.


How do you set the resistance while using ARX?

There is no need to set the resistance while using ARX; the machine applies perfect resistance in direct proportion to what the user produces. It moves the handles or cables at the selected speed during regardless of how hard a user exerts. The difficulty is determined entirely by the user, whose effort is measured and displayed by the software in real time.


Is ARX safe for rehabilitation or post-rehabilitation exercise?

Yes! ARX is safe for all forms of rehabilitation. There are no weights to drop, the speed is manageable and controlled, and the machine can never act upon the user. This means that a user can never encounter any forces that they themselves did not first produce, and this never-excessive scenario dramatically lowers the risk of injury.


How often should one train on ARX?

Completely up to you! ARX can be used seven days per week, once per month, or anywhere in between depending on goals. ARX can be used in myriad rep/set schemes, varieties, intensities, and more—any protocol is possible. No matter your schedule, ARX allows you to develop your body more quickly, safely, efficiently, and quantifiably than any gravity-based system.  


What about body composition goals? Can I add muscle mass?

Yep, it does that too! Muscle-building stimuli can be produced using weights, but with ARX’s adaptive resistance you can produce them in far greater magnitudes, far more safely, and far more quickly than with any weight. So for those looking for a pump, looking for muscle gains, and looking to build a more aesthetic physique, ARX is the best tool currently available.




Why is ARX safer than metal weights?  PLAY>

New training video for our ARX Academy program!



ARX Core Principles  PLAY>

Hear CEO Mark Alexander and Master Trainer Keith Norris dive into the core principles of ARX and how it can benefit you.

ARX - How Exercise Works  PLAY>

Does doing MORE exercise = MORE results? This video breaks down the fundamental principles of why we exercise and how the work we do ultimately turns into either a positive or a negative in our bodies.

A Guided Tour of a "Big 4" ARX Workout  PLAY>

See what a 4 exercise workout looks like, 2 minutes per exercise. on the ARX machines.

Wanna get swoll? Why is ARX is better for building muscle?  PLAY>

Does doing MORE exercise = MORE results? This video breaks down the fundamental principles of why we exercise and how the work we do ultimately turns into either a positive or a negative in our bodies.


Want More Strength? Slow It Down  READ ARTICLE >

A super-slow weight-training program can dramatically improve strength, users say, and the workout is intense.


  • Belt Squat

  • Deadlift

  • Ramanian Deadlift

  • Calf Raise

  • Pulldown

  • Chest Press (3 angles)

  • Chest Fly

  • Compound Row

  • Overhead Press

  • High Pull

  • Triceps Pressdown

  • Biceps Curl

  • Hamstring Curl

  • And more!

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