PROBLEM TO BE SOLVED: To obtain a sauna effect according to individual differences of subjects and the recovery / progress of a physical condition and a medical condition even for the same subject. SOLUTION: Heaters 400A to 400D for heating a subject, core body temperature sensors 810A and 810B for measuring the core body temperature of a subject, and heaters 400A to 400D based on the core body temperature measured by the core body temperature sensors 810A and 810B. It includes controllers 800A and 800B that output control signals for controlling the amount of heat. [Selection diagram] Fig. 1【課題】被験者の個体差、同じ被験者でも体調や病状の回復／進行具合に応じたサウナ効果が得られるようにする。【解決手段】被験者を加温するヒータ４００Ａ～４００Ｄと、被験者の深部体温を計測する深部体温センサ８１０Ａ，８１０Ｂと、深部体温センサ８１０Ａ，８１０Ｂによって計測された深部体温に基づいてヒータ４００Ａ～４００Ｄの熱量を制御する制御信号を出力するコントローラ８００Ａ，８００Ｂと、を備える。【選択図】 図１
