Cryotherapy was first developed in physical medicine for three main conditions; to help athletes recover and improve their performance, to prevent relapses for different illnesses and in the treatment of muscular and inflammatory pathologies. The anti-aging virtues of extreme cold have been known for a long time in Nordic and Eastern countries for rejuvenation and as an apparent fountain of health. Cryosaunas are a system for cryotherapy in which sessions are done between -110 degrees C and -190 degrees C