Sauna is an excellent way to strengthen one’s immune system by introducing controlled use of hot and cold stimulation. The body’s natural reaction to the heat of a traditional jacuzzi or steam room can be quite relaxing for many people–and it also has other benefits! A study done at Kyushu University Medical School found that participants who took part in this type thermos- therapy experienced less anxiety when exposed weather changes than those without such treatments . In addition , through perspiration acid waste materials are removed from blood aiding kidney ability filter impurities out; pores open up allowing flushing acne-producing bacteria