Most illnesses are accompanied by a fever. During a fever, the body heats up to eliminate viruses and attack foreign agents. This is direct evidence of the profound healing effects that occur when body temperature rises. Fever acts as a defense mechanism against a number of processes such as infection. One of the most immediate physiological effects of the fever is the acceleration of metabolic processes in general. Fever increases oxygen uptake and renders white blood cells more aggressive against bacteria, fungi or viruses. False fever created by Far infrared Rays, within physiological limits, can have many beneficial effects and will not produce any harm to normal cells that are able to cope with the higher metabolic demand. Recent studies also show that colds and flu-like illnesses are reduced dramatically if treated in the early stages with FIR heat therapy. The Aesta Sauna Dome and Aesta Ion Mat raise the core body temperature and give the user the gift of enhancing one's own immune systems processes.

The Aesta Sauna Dome and the Aesta Ion Mat create a false fever that can kill potentially dangerous viruses/bacteria and increase the number of leukocytes in the blood, thereby strengthening the immune system. The leukocyte, macrophage, NK cells and T cells are activated (the immune power is strengthened over 200 times by raising the body core temperature up to 3.5 degrees C) As well, you perk up your immune system by sweating at a lower more comfortable temperature than a conventional hot sauna. This also enhances circulation and oxygenates the tissues. What's more, the gentle healing heat opens the nasal passages and assists the sinuses to drain. Persons suffering from chronic sinusitis may experience either short-term or lasting relief of sinus headaches as well as find it easier to breath after a sauna session.