Most saunas heat the body from the outside in, making it difficult to apply heat to internal tissues. The far infrared energy emitted by this sauna overcomes this limitation by penetrating the skin and directly heating subcutaneous fat layers. These layers are used by the body to store toxic solvents and other organic wastes from the environment. This form of sauna has proven to be effective in ridding the body of these poisons. At the same time, purified air is breathed in, making it both an energizing and detoxifying treatment.