heat exposure raises oxygen uptake by ~75%, signaling a higher metabolic rate
Oxygen uptake (VO₂) increased significantly during sauna exposure (from ~0.23 to ~0.41 L/min in the first bath, 30-min group), indicating elevated metabolic rate under thermal stress.
What this means for you
When your body works harder to manage heat, it burns more energy — similar to light exercise. This metabolic lift can support calorie expenditure, cardiovascular conditioning, and the kind of deep physiological activation that leaves you feeling refreshed rather than just relaxed.
The published research
International Journal of Occupational Medicine and Environmental Health 2010;23(2):167 – 174
· 2010
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.