Practicing 50 sessions of mild heat therapy (Waon-type at ~60 °C) over a 10-week period helps restore excellent walking comfort and improve circulation in the legs.

noli's read

Rhonda Patrick's advice is based on particularly solid scientific foundations for this specific protocol. Indeed, a notable pilot study led by Dr. Tei and his team (2007), published in the Journal of the American College of Cardiology, evaluated this exact formula of 50 Waon therapy sessions over 10 weeks in individuals suffering from significant circulatory discomfort in the legs. The results of this clinical research showed a measurable improvement in fatigue-free walking distance and better local vitality. These benefits were confirmed by a randomized controlled trial (RCT) by Shinsato and collaborators (2010), which validated similar gains in walking comfort after 6 weeks of daily practice. Waon therapy is distinguished from a conventional sauna because it combines 15 minutes of mild infrared at 60 °C with 30 minutes of passive rest wrapped under a blanket to gently prolong the thermal effect. Although the sample sizes of these pioneering studies remain modest, the rigor of this clinical evidence shows that this approach is perfectly well-founded for optimizing circulatory well-being.

the sources

1. 1NIH Office of Dietary Supplements 2026
2. 2Manson JE et al. 2019
3. 3foundmyfitness.com/topics