carbonic acid baths reduce venous pooling compared to plain water baths at the same temperature
Serial CO₂ full baths produced a measurable reduction in venous volume increase (measured by venous occlusion plethysmography) compared to fresh water full baths at the same intermediate temperature of 34.5°C over 12 baths in 3 weeks.
What this means for you
When veins hold less pooled blood, circulation moves more efficiently — which most people notice as lighter, less heavy legs, reduced puffiness, and better overall blood flow. This kind of venous response is what makes the difference between water that simply warms you and water that actively shifts how your vascular system behaves.
The published research
CO2 Balneotherapy for Arterial Occlusion Diseases*:
· 1985
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.