Intermittent Hypoxic-Hyperoxic Training
A non-invasive therapy that simulates high-altitude conditions, alternating oxygen deprivation and enrichment to stimulate the body's natural repair processes, boosting cellular health, energy levels and overall vitality.
What it is
High altitude, without the mountain.
IHHT uses advanced CellAir technology from CellGym to alternate oxygen deprivation (hypoxia) and enrichment (hyperoxia) through a breathing mask while you rest. The body consists of complex adaptive systems that respond to those swings by stimulating cellular repair, faster cell regeneration and enhanced energy production, improving resilience over time.
IHHT targets mitochondrial function (the cellular machinery behind energy production) rather than masking fatigue. Many clients report improved energy and vitality after a few sessions.
Fatigue & low energyAlternating hypoxia and hyperoxia boosts cellular repair mechanisms and reduces inflammation, supporting faster regeneration and more efficient energy use.
Recovery & performanceBetter oxygen utilisation in the brain during the hyperoxic phase improves mental clarity, focus and overall brain performance, while reducing the oxidative stress that impairs cognitive health.
Cognitive performanceNo exertion is involved. You sit or lie still and breathe through a mask for 40 to 60 minutes; the adaptation is driven by the oxygen profile, not by effort.
Non-invasive, no exertionHow it works
Two phases, alternating.
Hypoxic phase
Oxygen intake is reduced, mimicking high-altitude conditions to challenge the cells and promote adaptation. The body responds by stimulating red blood cell production to improve oxygen delivery to the tissues, a natural adaptation that improves oxygen transport efficiency and contributes to better stamina and vitality.
Hyperoxic phase
Oxygen intake is increased, accelerating cellular repair and energy production. This is also the phase associated with improved oxygen utilisation in the brain, supporting mental clarity and focus.
CellAir by CellGym
The oxygen profile is generated and controlled by advanced CellAir technology from CellGym, delivered through a breathing mask while you rest, non-invasive throughout, with nothing injected or ingested.
Benefits
What the training does.
Supports energy and stamina by improving the efficiency of the cellular machinery responsible for energy production.
The alternating oxygen profile activates the body's own repair and clearance processes at a cellular level.
Lower oxidative load and reduced inflammation underpin both recovery and the wider longevity picture.
Improved cardiovascular function, vascular elasticity and circulation support recovery and can contribute to better blood pressure management over time.
“Nothing is added to the body here. The stimulus is the oxygen profile, and the result is the body's own adaptive response, which is why it sits so well alongside the rest of a longevity programme.”
Why here
Personalised, not generic.
Combined with personalised wellness protocols
IHHT is delivered as part of a personalised wellness programme rather than in isolation, so it works alongside diagnostic testing, nutrition and the other longevity treatments offered at the clinic.
Advanced CellAir technology
Sessions use CellAir technology from CellGym, with the hypoxic and hyperoxic phases controlled to a defined profile rather than left to guesswork.
Administered by expert professionals
Treatments are safe and tailored, administered by trained professionals at the Regenerative Centre under clinical oversight.
Is it right for you
Who it suits.
IHHT is suitable for most people, and a consultation is recommended so the treatment can be tailored to your health.
- Persistent fatigue and low energy
- Slow recovery after exertion, illness or travel
- Mental clarity, focus and cognitive performance
- Endurance, stamina and cardiovascular conditioning
- Healthy ageing as part of a longevity programme
- Sessions typically run 40 to 60 minutes with no downtime
- Non-invasive: you breathe through a mask at rest
- Many clients report improved energy after a few sessions
- A consultation tailors the protocol to your health
Your consultant
Overseen by Dr Jinah Yoo.
Dr Jinah Yoo
MBChB FRCP · Consultant Dermatologist · FounderDr Yoo is a Korean, UK-trained consultant dermatologist and the founder and medical director of Dr Jinah Yoo Dermatology, with expertise spanning dermatology, immunology and aesthetic medicine.
Her approach to longevity is diagnostic first: testing and assessment establish what is actually driving fatigue or slow recovery before a protocol such as IHHT is built around it.
- GMC-registered consultant dermatologist
- Fellow of the Royal College of Physicians (FRCP)
- Expertise across dermatology, immunology and aesthetic medicine
- Delivered at the Dr Jinah Yoo Regenerative Centre
Your journey, step by step
What actually happens.
Consultation
IHHT is suitable for most people, but a consultation is recommended so the treatment can be tailored to your health, alongside any diagnostic testing that would sharpen the picture.
You commit to nothing at this stageThe session
You rest while breathing through a mask connected to the CellAir system. The device alternates hypoxic and hyperoxic phases to a controlled profile; there is no exertion involved.
Typically 40–60 minutesStraight back to your day
There is no downtime. You can return to work or normal activity immediately afterwards.
No recovery periodHow results develop
Many clients report improved energy and vitality after a few sessions. Because the mechanism is adaptive, benefits build with a course rather than arriving all at once, and IHHT is usually run as part of a wider personalised wellness programme.
Adaptation builds across a courseThe clinic
45 Albemarle Street, Mayfair.
Questions
Asked before booking.
Yes, but we recommend a consultation to tailor the treatment to your health.
Typically 40 to 60 minutes, with no downtime.
Many clients report improved energy and vitality after a few sessions.
Intermittent hypoxic training mimics high-altitude conditions, exposing the body to periods of reduced oxygen (hypoxia) followed by enriched oxygen (hyperoxia). The body consists of complex adaptive systems that respond to these changes by stimulating cellular repair, faster cell regeneration and enhanced energy production, helping the body adapt and improve resilience over time.
Yes. IHHT has been shown to enhance cognitive function by promoting better oxygen utilisation in the brain during the hyperoxic phase. This helps improve mental clarity, focus and overall brain performance while reducing oxidative stress that can impair cognitive health.
During the hypoxic phase, the body stimulates the production of red blood cells to enhance oxygen delivery to the tissues. This natural adaptation improves oxygen transport efficiency, contributing to better stamina, energy and overall vitality.
Breathing hypoxic air challenges the body to adapt to lower oxygen levels, activating metabolic processes that promote energy efficiency and cellular repair. This phase prepares the body to respond more effectively to stress and enhances its overall performance.
Yes. IHHT can help regulate blood pressure by improving cardiovascular function and oxygen utilisation. The therapy enhances vascular elasticity and circulation, which can contribute to better blood pressure management over time.
Intermittent hypoxia therapy boosts cellular repair mechanisms and reduces inflammation, making it an effective recovery method. By alternating hypoxia and hyperoxia, it supports faster regeneration and helps the body use energy more efficiently.
Next step
Train your cells, at rest.
A consultation comes first so the protocol is tailored to your health, then sessions and cost are agreed in writing.
