Abstract: A cryosauna for recreational procedures comprises a source of liquid nitrogen, a unit to prepare an operating mixture, and a patient box. The unit has thermo insulated evaporator and mixer in fluid communication with each other. The evaporator is connected via a valve to the source of liquid nitrogen, the mixer through a fan is open to ambient air and connected with the patient box. The patient box is made roofless and comprises a floor, walls, and an adjustable stage to accommodate the patient. The cryosauna also comprises a recycle stream bypass channel connecting the patient box and evaporator and is provided with a three-way discharge valve, a first and a second discharge ducts connecting the patient box with inputs of the discharge valve and a duct fan installed at an output of the discharge valve. A method of operating the cryosauna during a session is also disclosed.