CO₂ immersion shifts the nervous system toward a calmer, more recovered state
CO2 immersion at thermoneutral temperature affects thermoregulation and heart rate variability in humans.
What this means for you
When your nervous system tips toward its parasympathetic ('rest and digest') mode, your heart rate steadies, stress hormones ease off, and your body gets better at recovering. Most people recognize this as that deep, unhurried calm after a good soak — CO₂ immersion appears to produce that shift measurably, not just subjectively.
The published research
CO2 balneotherapy: effect on free radicals release and total
· 2009
This page describes a documented finding about the underlying wellness technology. It is not a marketing claim about any specific device. For information about HOCATT specifically, visit hocatt.com.