15 minutes, twice a day.

HEPOX is a cutting-edge patent-pending product to help athletes increase strength and endurance by simulating high altitude conditions.

Naturally adapt to improve performance. Studies show a 10-20% increase in strength and 3-5% improvement in 1000meter times.

Elevate Your Performance

altitude training device for epo and red blood cell support

HEPOX

HEPOX

What is intermittent hypoxia exposure (HEPOX)?

Access the Athletic Benefits of Intermittent Hypoxia Exposure with HEPOX

Minimalist blue outline of a mountain with a flag at the peak, enclosed in a circle to represent altitude exposure.
Illustration of a blood droplet with three pink cells inside to represent increased red blood cell count.

Altitude Pre-Acclimation

Red Blood Cell Stimulation (EPO)

Line drawing of lungs with an upward arrow indicating improved Vo2 max.
Icon of a person sleeping in a bed, with Z's above the head indicating sleep, indicating better sleep and recovery.

Oxygen Utilization & Efficiency

Better Sleep & Recovery

Outline of a target with a checkmark in the center to represent HEPOX is USADA and WADA legal.
Icon of a briefcase representing HEPOX is portable and convenient as opposed to other methods.

Safe & Legal

WADA/USADA Approved Method

Portable & Convenient

  • Professional cyclist positive quote after using HEPOX for altitude and hypoxia performance adaptations.

    “I saw real results both in performance and blood work— my highest ever hematocrit and testosterone levels. It made a huge difference in how I felt racing at elevation.”

    Stefano Barberi,

    Professional Cyclist

  • Professional cyclist quote after using HEPOX for altitude and hypoxia adaptations.

    "HEPOX accelerated my preparation for USA Pro Road National championships, delivering altitude-style adaptation in minutes a day. It's the edge I reach for when it counts."

    Brendan Rhim,

    Olympic Cyclist

  • Professional cyclist quote after using HEPOX for altitude and hypoxia performance enhancement adaptations.

    “HEPOX fast-tracked my early-season form for Europe. Short daily sessions gave me an altitude-style stimulus without travel. It’s now a key part of my preparation.”

    Keiran Haug,

    Professional Cyclist

About the founder - david greif

HEPOX was born from necessity. As a mechanical engineering student and aspiring pro cyclist, I hit a performance plateau that effort alone couldn’t overcome. To compete with the best, I needed the same physiological edge that many professional athletes seek— altitude adaptation. I had heard from other professinoals about altitude effects on red blood cell production, but a $6,000 setup wasn’t an option (especially not one that takes over your bed). So I set out to build a better solution. I invented HEPOX: a compact and affordable device that safely simulates high-altitude oxygen levels to trigger red blood cell production and oxygen-efficiency adaptations. The results were transformative, helping me earn a professional racing contract. Now that I am retired from professional racing, I’m bringing HEPOX to athletes everywhere—making elite-level training accessible and portable.

Our
brand vision

HEPOX is now available. This early version lays the foundation for future models, which will feature biometric feedback and acclimation tracking integrated with a companion app. As a thank-you for supporting our development, purchasing any HEPOX now will grant you 50% off a future upgraded version.

Learn more
Illustration of a sports altitude hypoxic simulator cylindrical device with dimensions, showing a length of 8 inches and a diameter of 3.5 inches, featuring buttons and a small display panel.
The benefits of altitude acclimitization shows an alpinist on the mountains

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