Upon inhalation the essential oil molecules travel to the hypothalamus and calm down the production of stress hormones. Estrogen and progesterone can lower the intensity of the internal fever created and burn off the excess stress signals. Within the thalamus is the regulatory system for body temperature and upon inhalation the menthol along with many of the other constituents will assist in lowering body temperature. The fir, peppermint and pine cool the body. Geranium and sage will re-establish hormonal balance. Fennel actually simulates the effects of estrogen by mimicking this hormone and immediately diminishes harsh symptoms. Tangerine and bergamot promote happiness, peace and joy while cypress increases the circulation that will move everything along.