kryokammare

A kryokammare, commonly translated as a cryo chamber, is an enclosed unit used for whole-body cryotherapy. In a kryokammare, a person is exposed to extremely cold dry air for a short period, typically two to four minutes. Most systems reach temperatures of about −110°C to −140°C, produced by liquid nitrogen or closed‑cycle refrigeration. Participants usually enter with minimal clothing, wearing socks, gloves, and protective ear or facial coverings to minimize frostbite risk.

Mechanism and claimed effects: The cold exposure causes rapid vasoconstriction followed by vasodilation after the session, which proponents say may reduce inflammation, alleviate pain and soreness, and improve recovery or mood. However, the exact physiological effects and the durability of any benefits are not well established, and results across studies are mixed and often small.

History and usage: Whole-body cryotherapy originated in the late 20th century, with early medical applications for inflammatory conditions in Japan and Europe. It later gained popularity in sports, fitness, and wellness sectors as a purported performance and recovery tool. It is offered in clinics, rehabilitation centers, and dedicated cryo spas.

Safety, risks, and regulation: Potential risks include frostbite or cold burns, eye or ear injury, hypothermia, and, in poorly ventilated rooms, hypoxic exposure from nitrogen gas. Some individuals may be more at risk, including pregnant people, those with cardiovascular or respiratory conditions, uncontrolled hypertension, cold intolerance, or skin disorders. Proper screening, supervision by trained staff, and device maintenance are essential. Regulation and quality standards vary by country and jurisdiction; some places require medical oversight or facility licensing, while others classify cryo chambers as wellness equipment.