What you'll find in Germany today: most IHHT centers run a 40-minute protocol over 5–7 cycles, monitored by SpO₂ pulse oximetry. Two equipment vendors dominate the market: Cellgym and IHHT-Pro, both German-engineered. A standard 10-session course is the typical onboarding pricing tier — usually €600–900 — with the dosing logic being adaptation, not single-session intervention.
Research is mixed. A 2014 review by Burtscher et al. supports cardiovascular adaptation effects similar to mild altitude exposure, but the longevity claims (mitochondrial biogenesis, anti-aging) are less robustly supported in peer-reviewed human studies. If you're considering IHHT, ask the operator about their specific protocol, training and what outcomes they measure — anyone selling it as a quick fix without baseline labs is overselling.
