Why Adaptive Resistance™

Get the perfect rep — every single time.

Adaptive Resistance Exercise™ dynamically adjusts in real time to deliver exactly the load you can handle — on every rep of every set.

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What Is Adaptive Resistance™?

Our breakthrough Adaptive Resistance™ technology uses patented, motorized resistance and computer software to give you the perfect workout every time.

Each repetition is perfectly matched, in both the push and pull motion, during your workout so that you receive the exact right amount of resistance automatically at every moment of your workout.

Fixed weight

Only truly hard at your weakest point in the rep.

Adaptive resistance

Maximal load on every inch — lifting and lowering.

Achieve The Perfect Rep

When you experience Adaptive Resistance™, your muscles are challenged on both the positive and negative portion of every rep to the exact level you are capable of at each moment.

Compared to traditional tools like weights, these optimal levels of resistance allow for improvements in strength, muscle mass, bone mineral density, and cardiovascular fitness to occur in just minutes per week compared to hours per week.

Use The Best To Be Your Best

ARX’s revolutionary technology has been quantifiably improving the lives of tens of thousands of people around the world for 15 years.

ARX is trusted by Tony Robbins, Dave Asprey, and Ben Greenfield — alongside the members of 100+ studios and clinics worldwide.

ARX vs weights

Better on every measure — in 72% less time.

Muscle Mass Gains. Muscle grows in response to the stress signal of resistance — and that signal is only as good as the resistance itself. ARX loads the muscle perfectly through every moment of every rep, maximizing the signal to grow.

* 12-week randomized head-to-head study — ARX vs. traditional weight training.

See it work

The most scientific training tour in fitness ends on an ARX.

When Will Tennyson tested the world’s most scientific workout machines for 1.3 million viewers, the machine that matched his maximum force on every inch of every rep — and painted the proof on screen in real time — was ARX. Five minutes of adaptive resistance doing what weights can’t.

Featured for 1.3M viewers

Will Tennyson · 5-min segment

The Research And Science Of Adaptive Resistance Exercise

The ACE-Commissioned Study: How Adaptive Training Compares to Traditional Resistance Training

Adaptive resistance exercise equipment uses AI to create workouts that are safe, controlled and fully quantifiable — but how do they compare to free weights and traditional machines? Researchers in the High Altitude Exercise Physiology Program at Western Colorado University set out to find the answer.

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Adaptive Resistance™ Training Is Superior to Traditional Resistance Exercise

Featured in the International Journal of Research in Exercise Physiology — a randomized, controlled study comparing muscular fitness, body-composition, and cardiorespiratory outcomes between Adaptive Resistance™ (ARX) and traditional moderate-intensity resistance exercise with weights.

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