Cryotherapy

There is no evidence demonstrating effectiveness or safety of cold immersion therapy for chronic fatigue syndrome and in fact it is not uncommon for patients to experience unusually high sensitivity to extremes of temperature which may mean this type of therapy carries additional risks.REF NEEDED

Notable studies

 * 2014, Voluntary activation of the sympathetic nervous system and attenuation of the innate immune response in humans (March 14, see also Wim Hof)