The human body is dependent upon oxygen for its survival. Yet, various factors such as aging, psychological stress, obstructive sleep apnea, exposure to cigarette smoke, living at high altitude, high-intensity exercise, or a sedentary lifestyle can all lead to a hypoxic state. Hypoxia may be involved in the pathogenesis of a number of disorders including impaired immunity, hormonal imbalances, fibromyalgia, cardiovascular diseases, type 2 diabetes, depression, and anxiety. Hyperbaric oxygen therapy and massage are two means by which to improve oxygen perfusion. Certain dietary supplements such as Ginkgo biloba, coenzyme Q10, and beetroot juice can increase oxygenation through enhanced blood flow while branched-chain amino acids and omega-3 fatty acids can improve maximum oxygen consumption V̇o2max. Additionally, omega-3 fatty acids and vitamin D may reduce the incidence of sleep apnea while N-acetyl cysteine may protect against hypoxia injury related to sleep apnea.