In the heat therapy of portable saunas, the combination of temperature and duration is like a precise matrix, directly affecting the heat therapy effect and safety. The optimal duration of hyperthermia at 60℃ and 40℃, as two typical temperature ranges, lies behind simple biological thermodynamic principles. First, let's look at a high-temperature environment of 60℃. At this tempera... https://hybervitals.com/blogs/blog/a-portable-sauna-usage-time-recommendation