Steam sand bathing felt more comfortable in a small heat-exposure trial
Healthy young men experienced blood pressure declines after each heating method, while steam sand bathing produced a smaller rise in core temperature and greater comfort.
Based on the published abstract. The full paper may contain additional methods, results and limitations.
The 30-second takeaway
Steam sand bathing appeared more comfortable and produced less change in some physiological measurements than hot-water bathing or sauna exposure. Mean and diastolic blood pressure fell during recovery after all methods, without a statistically significant difference between conditions. This short experiment does not establish lasting blood pressure benefits or results in people with hypertension.
The study involved a small group of healthy young men and measured immediate responses. The abstract gives no blood pressure change in pressure units and does not specify how long recovery measurements continued.
What researchers found
Mean and diastolic arterial blood pressure responses
At recovery's end, steam sand, hot-water, and sauna conditions showed similar responses; blood pressure declined after each.
Comfort and temperature
Participants rated steam sand bathing as more comfortable at the end of heating. Core temperature rose least during that condition, with larger increases during sauna exposure and the largest during hot-water bathing.
A respiratory measurement
Carbon dioxide measured at the end of exhalation stayed stable during steam sand bathing but fell during the other conditions. This was a physiological measurement; it does not establish broader respiratory health benefits.
The original publication
Japanese steam sand bath heat therapy mediates comparable reductions in blood pressure with smaller discomfort and respiratory strains than hot water immersion and sauna.
Horiuchi M, Fujii N
Eur J Appl Physiol · 2026
- PubMed ID
- 40879771
- Record checked
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