IHHT stands for Intermittent Hypoxic Hyperoxic Training — a controlled oxygen therapy that alternates between low-oxygen and high-oxygen air to train your cells to use oxygen more efficiently. It's used by athletes, clinics, and recovery centres across Europe, and available as a session add-on at Hedon Club in Zürich.

Intermittent — the session alternates between two states rather than staying fixed in one.

Hypoxic — reduced oxygen, like the air at altitude. This phase stresses your cells into adapting.

Hyperoxic — oxygen-enriched air. This phase lets your cells recover and consolidate the adaptation.

Training — because your mitochondria are literally being trained to perform better over time.

IHHT vs IHT — What's the Difference?

IHT (Intermittent Hypoxic Training) uses only the low-oxygen phase. IHHT adds the hyperoxic recovery phase within the same session — making it more effective and better tolerated. The stimulus and the repair happen together.

What an IHHT Session Involves

You breathe through a mask while lying down, alternating between phases for 30–45 minutes. No exertion, no pressure chamber. Most people find it relaxing. A typical course is 10–15 sessions over a few weeks — the cellular adaptations build and persist well after the course ends.

For a deeper look at the science, see The Science of IHHT. For what to expect in a session, see How to Do IHHT.

👉 Book a session at hedonclub.ch/locations.