The MAXIMUS device works by adding adjustable resistance to both inhalation and exhalation, forcing your respiratory muscles—the diaphragm, intercostals, and abdominals—to work harder with every breath. This dual-resistance system, known as Dual Airflow Resistance Technology (DART), is what sets MAXIMUS apart. Most breathing trainers only challenge inhalation, but MAXIMUS strengthens the entire breathing cycle. By doing so, it trains your lungs and respiratory muscles to become stronger, more efficient, and more fatigue-resistant—just like lifting weights for your breathing system.

Physiologically, breathing against resistance creates a mild, controlled buildup of carbon dioxide (CO₂)—a state known as hypercapnia.

That controlled CO₂ elevation triggers key adaptations: improved CO₂ tolerance, stronger ventilatory drive, better oxygen utilization (higher VO₂max), and an elevated lactate threshold, meaning you can perform at higher intensities for longer before fatigue sets in. Over time, these adaptations improve your breathing efficiency, aerobic capacity, and recovery. The result is a body that breathes smarter, moves faster, and sustains performance deeper into each workout or competition—because your respiratory system is now trained to keep up with your athletic engine.