Scroll Top

What is cellgym?

Cellgym IHHT is an advanced system for Intermittent Hypoxia-Hyperoxia Training (IHHT) which is based on over a decade of rigorous research and practical experience.

By alternating between periods of inhaling low-oxygen and high-oxygen air, IHHT initiates similar effects as traditional altitude training, utilizing our body’s natural adaptability.

The best part? A cellgym treatment only takes 40 minutes and can be conveniently performed using the Walk-In/Walk-Out procedure.


Compellingly Easy and Relaxing


The person undergoing training simply lies down on a couch, receives a personal breathing mask, and breathes through it for about 40 minutes, alternating every 3-5 minutes between oxygen-rich (32-34%) and oxygen-reduced (9-17%) air.


Throughout the entire training session, a monitoring system ensures real-time control of oxygen saturation, heart rate and the exact oxygen concentration in the breathing mask.


cellgym IHHT can be tailored to individual needs and goals, taking into account pre-existing conditions, fitness level, age, and the individual’s training state.


This method utilizes the fundamental principles of altitude training, but without the physical strain or atmospheric pressure. With cellgym, you have an effective way to generate a significant physiological stimulus.


Experience the cellgym Difference

The Key Benefits


Our devices are designed for intuitive ease of use, ensuring a simple process for you.


Cellgym IHHT provides automated protocol suggestions to streamline treatment planning and save you valuable time.


As a non-invasive method, cellgym IHHT offers low risk and high comfort for your clients.


Once the treatment is initiated, the session runs completely automated, giving you more time for other tasks.


With the option to bill IHHT through GOÄ and Heilpraktiker codes, cellgym offers a cost-effective solution for your practice.

These customers trust cellgym


Made in Germany – Precise and Reliable

Our Cellair IHHT devices have proven themselves in practice for many years – both for private use and professional applications. Take a look and find the right device for your needs.


cellair home



cellair home is the ideal training system for the whole family. Easy to use and completely safe, it provides a reliable training experience for home use.

Weight & Proportion:

43 kg, 50x48x44

Oxygen Ranges:



PC, Laptop, Tablet, Phone


cellair pro



cellair pro is one of the most advanced high-tech systems on the market, perfect for professional use in commercial facilities such as medical practices, businesses, and training centers.

Weight & Proportion:

43 kg, 50x48x44

Oxygen Ranges:



PC, Laptop, Tablet, Phone

Special Features:

Remote Diagnosis & HRV Integration


cellair lounge



With cellair lounge, specialized cellgym providers like wellness hotels, medical practices, spa clinics, breathing lounges, etc., can operate up to ten systems simultaneously through a central control software.

Weight & Proportion:

43 kg, 50x48x44

Oxygen Ranges:



PC, Laptop, Tablet, Phone

Special Features:

Very quiet, air supply via external compressor


cellair one

Cellgym cellair med


cellair one is the proven medical device for doctors and therapists. As the first cellair system with medical approval in Europe (Class II), it completes the cellair family with its stand-alone system.

Weight & Proportion:

51 kg, 103x50x46

Oxygen Ranges:



Built-in Screen

Special Features:

Class IIa Medical Approval


The cellair cat presents itself as an innovative CO2 treatment system based on the established principles of the Bohr effect.

By introducing CO2 gas into a specialized enclosure surrounding the patient, cellair cat provides efficient access to CO2 therapy.

The special advantage? A treatment with cellair cat only takes 20 to 30 minutes of your time and can be easily administered with minimal effort.


cellair cat

Reliable Safety and Effectiveness

Flexible and
Interference-Free Operation

Decentralized control of up to 10 devices for uninterrupted treatment.

Flexibler und
Störungsfreier Betrieb

Predictive Maintenance

Continuous monitoring of device performance for early detection of maintenance needs.

Vorausschauende Wartung

Intelligent Training Control

Advanced analytics and our patented Hypoxic Session Index optimizes every training session.

Intelligente Trainingssteuerung

Convenient Session-

Clear presentation and management of training results, easy to share with patients.

Komfortable Session-


Selected References


“I have been using cellgym for 5 years to treat my patients in the practice – with remarkable success.”



Cellgym has become indispensable in our family; it is as essential and valuable to us as good food.”



“Cellgym has been an essential part of our medical programs for many years.”



Cellgym is a constant component in my holistic approach to therapy, providing treatment security and predictable success.”


For the well-being of body and soul.

Biohacking is the method of enhancing one’s life force, health, and vitality. At Six Senses, the hacks include nutritional guidance, compression therapy, detox, diet and sleep programs, as well as IHHT using devices and concepts from cellgym.

Six Senses – Partner with All Senses.

“Helping people reconnect with themselves, others, and the world around them” is the mission of Six Senses, one of the most luxurious hotel chains of our time, with 26 exclusive locations worldwide. Their vision of a harmonious and mindful community aligns perfectly with the culture of cellgym. Therefore, we are delighted to offer our cellgym program at five Six Senses locations: in Portugal, Spain, Switzerland, Italy, and Thailand.

Why customers recommend cellgym

  • Latest medically approved technology – Made in Germany
  • Holistic system with practical relevance
  • Worldwide service and support available from Monday to Friday 9-16 o’clock (GMT+1)
  • Collaboration within a vast network of experts
  • Training and education provided by experts, including certification


Become a cellgym IHHT master

Become a master in your field

We believe in science and let it guide us to make a sustainable improvement in people’s lives.

Our cooperation partner, the IHT Academy e.V., offers a comprehensive educational program on IHT/IHHT topics. It caters to participants of all knowledge levels – from the basic seminar for beginners to specialized courses for experienced users and advanced master training. The courses and seminars are available both online and offline.

Our aim is to provide you with proven standard practice concepts and tailor-made solutions developed in collaboration with our expert network.

Did we raise you interest? If so, we invite you to join one of our in-person deep-dive seminars. Depending on the yearly schedule, we offer the basic training for cellgym® PRO, the further education for cellgym® EXPERT, or the final certification for cellgym® MASTER. Further information on the dates can be found here. We look forward to your participation!

Cellgym academy


April 2023


14.4. – 15.4.23


2-day in-person training for IHHT/IHT – PRO & EXPERT

October 2023


13.10. – 15.10.23


3-day in-person training for IHHT/IHT – EXPERT & MASTER


No time to participate in our in-person seminars? Then you can conveniently deepen your knowledge via our online learning experience. Our expert team provides various learning materials for customers on the cellgym® E-Learning Platform. Take a look inside.

Our Service & Support Promise

Is something not working as it should be? Do you have any questions? Or do you require an urgent replacement?

Our support team is available 24/7 to assist you with any questions or issues.
  • Quick Assistance
  • On-site Maintenance and Repairs
  • Remote Support
  • Real-time Monitoring of IHHT Devices
Cellgym Support

We would love to hear from you

Request information now



    I´m interested in:

    How did you hear about us:


    Here you will find our frequently asked questions. If you need further assistance, please feel free to contact us at any time.

    FAQ Cellgym eng

    • What is Intermittent Hypoxia-Hyperoxia Training?

      Intermittent Hypoxia-Hyperoxia Training (IHHT) is a form of simulated altitude training where the air pressure remains constant, and only the oxygen content of the breathing air varies. During this training, participants alternate between breathing oxygen-poor and oxygen-rich air. This simulates the ascent and descent of a mountain, training the body to efficiently utilize oxygen, similar to altitude training. IHHT can be conducted using specialized hypoxia devices and masks, such as those used in cellgym®.

      It is essential to understand that the results of IHHT may vary based on the individual’s training condition, response, and the intensity and duration of the oxygen reduction phases. To develop a safe and effective IHHT program, we recommend seeking the support of a qualified professional. For more information and a list of our users, visit our website at

    • How long, often, and how intense should one perform IHHT?

      Every individual is unique, so there is no standardized answer to the optimal duration, frequency, and intensity of IHHT. It depends on your personal circumstances, goals, body responses, and potential side effects. However, here are some general recommendations:

      Duration: A typical IHHT session usually lasts 30 to 50 minutes, with hypoxia and hyperoxia phases lasting approximately 3-5 minutes each.

      Frequency: For a training period of four to six weeks, we ideally recommend two to three IHHT sessions per week, allowing your body enough time for adaptation and recovery.

      Intensity: During the hypoxia phases, the oxygen concentration is typically between 10% and 15%, equivalent to a simulated altitude of around 3,000 to 5,000 meters.

    • What happens in the body during hypoxia?

      During hypoxia, which is a reduction in the oxygen content in the breathing air, the body initiates a variety of biochemical adaptation processes. These processes naturally vary depending on individual genetics, fitness level, and the duration of hypoxia. Here are some of the most common reactions:

      Our breathing rhythm intensifies – we breathe faster and deeper. This allows the body to take in more oxygen and efficiently expel carbon dioxide.

      The heart begins to beat faster and pumps more blood through the body. This is to transport a greater amount of oxygen to the brain and other vital organs.

      In essence, our body adapts to the available oxygen content, as if we were leisurely enjoying a coffee on the Zugspitze (with its summit cross at an altitude of 2,960 meters). It is this natural adaptability that is activated and trained during hypoxia.

    • How much does IHHT treatment typically cost?

      The costs for a session of Intermittent Hypoxic-Hyperoxic Training (IHHT) can vary significantly depending on various factors. Usually, a single session can cost between 50 and 80 euros. However, the final costs can be influenced by the following factors:

      Location and provider: The costs may differ depending on whether you undergo IHHT at a doctor’s office, with a naturopath, or at a hotel. Additionally, prices can vary based on geographical location, such as rural areas or cities.

      Duration: The overall costs of an IHHT program largely depend on the number and duration of sessions. A typical IHHT program can last from a few weeks to several months, with usually two to three sessions per week.

      Equipment: Costs can also be affected by the required equipment, including hypoxia machines, masks, and monitoring devices.

      For more precise information, it is best to contact some local providers. It’s important to note that IHHT costs may not be covered by health insurance, so it’s advisable to inquire about potential costs in advance.

    • Is real altitude training healthy?

      Altitude training at elevations above 2,500 meters above sea level can have positive effects on health. However, depending on individual circumstances, there are also potential risks and disadvantages:

      Altitude sickness: Sudden exposure to high altitudes can cause symptoms such as headaches, nausea, dizziness, and shortness of breath. These symptoms are usually temporary but may, in rare cases, require immediate descent.

      Dehydration: The dry air at high altitudes can lead to increased fluid loss and dehydration.

      Reduced training intensity: The decreased oxygen content at high altitudes can affect the quality of training.

      In general, altitude training can be beneficial for health when properly planned and conducted. It is essential to pay attention to the body’s individual response and make adjustments if necessary. Before starting an altitude training program, it is advisable to consult a physician or sports medicine specialist to assess potential risks and contraindications.

    • How does IHHT differ from real altitude training in the mountains?

      Intermittent Hypoxia-Hyperoxia Training (IHHT) or Intermittent Hypoxia Training (IHT) differs significantly from traditional altitude training in the mountains in several aspects.

      Safety: In IHHT, oxygen conditions are artificially modulated in a controlled environment, contrasting with altitude training, where athletes experience continuously increasing hypoxic stress and hydrostatic pressure during ascent.

      Duration: Compared to altitude training, which often lasts for days, weeks, or even months, IHHT consists of short, repeated phases of hypoxia and hyperoxia within a limited time frame.

      Individualization: IHHT can be easily tailored to the individual goals, needs, and circumstances of the person undergoing training, while this may be more challenging or even impossible in altitude training.

      Hyperoxia Phase: Unlike altitude training, IHHT includes phases with elevated oxygen concentrations that are used to optimize the training effects.

      Practicality: While altitude training requires access to mountainous regions, IHHT can be performed in specialized training centers or even with portable devices, making it a more accessible option for many people.

    • Why is Heart Rate Variability often measured in parallel with IHHT?

      Heart Rate Variability (HRV), which refers to the variations in time intervals between individual heartbeats, provides valuable information about a person’s autonomic nervous system and cardiovascular health. It serves as a useful indicator to assess training status, recovery phase, and stress levels.

      In combination with Intermittent Hypoxia-Hyperoxia Training (IHHT), HRV measurement offers the following benefits:

      Monitoring: Evaluating HRV allows us to assess how the body responds to IHHT and how well it adapts to hypoxia. This enables optimal customization of the training based on individual performance.

      Recovery: HRV also helps to gauge the recovery status of the individual undergoing training. It allows for optimizing the timing between periods of exertion and rest, leading to more effective training.

    • How can the safety of an individual undergoing IHHT be ensured?

      Here are some methods:

      Medical History: Prior to starting the training, it is essential to gather the trainee’s medical history to identify potential risks and take specific precautions.

      Individual Adjustment: IHHT should be tailored to the individual’s needs and abilities, and it should only commence after an appropriate warm-up phase.

      Heart Rate Monitoring: Monitoring the heart rate ensures that the training intensity is appropriate and prevents the individual from being overloaded.

      Blood Pressure Monitoring: Regular blood pressure measurements assess cardiovascular responses and prevent health risks.

      Pulse Oximetry: Measuring blood oxygen saturation monitors the response to hypoxia and maintains the oxygen level within a safe range.

      Breathing Assessment: Observing the breathing frequency provides insights into adaptation to hypoxia and ensures safety.

      Well-being: It is advisable to keep a close eye on the individual’s body throughout the entire training session to promptly detect any discomfort or unusual symptoms.

    • Should IHHT be used as a preventive measure?

      Intermittent Hypoxia-Hyperoxia Training (IHHT) can be utilized as a preventive measure since it provides a physical stimulus. However, it is crucial to note that each individual responds differently to IHHT. Therefore, we recommend seeking medical or expert advice before starting the training to ensure that it is tailored to your specific needs and circumstances.

      Furthermore, it is essential to understand that IHHT is just one component of Cellgym’s holistic preventive health program. A balanced diet, regular physical activity, sufficient sleep, adequate micronutrient intake, and adjusting lifestyle based on the latest scientific insights on healthy living are equally important aspects of this program.