passive heating raises core body temperature by ~0.8°C, staying elevated for 90 minutes after
Passive heating elevated core body temperature by approximately 0.8°C and skin temperature by 3.6–4.3°C, with core temperature remaining elevated for up to 90 minutes into post-heating recovery.
What this means for you
A sustained rise in core temperature is how your body activates heat-related recovery processes — from circulation and muscle relaxation to cellular repair signals. The fact that it stays elevated well after a session ends means your body keeps responding long after you've cooled down, which many people notice as lingering warmth, looser muscles, and a calm, heavy feeling.
The published research
Systemic cardiovascular and carotid baroreflex support of arterial pressure during recovery from passive heat stress in young and older adults.
Physiological reports · 2025
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.