chronic obstructive pulmonary disease (COPD-II and COPD-III)

chronic diseases with symptoms of decompensation or terminal illness

individual intolerance of oxygen insufficiency

acute somatic and viral diseases

not recommended in serious cardiac and hypertension cases

cancer, unless IHT is prescribed by a doctor

people with epilepsy, pacemakers or heart arrhythmias, unless treatment (including Intermittent Hypoxic Training) is under direct medical supervision