Hydrotherapy is the use of water, both internally and externally and at varying temperatures, for health purposes. Also known as water therapy or "water cures," hydrotherapy includes such therapeutic treatments as saunas, steam baths, foot baths, contrast therapy, sitz baths, and colonic cleansing. Aromatherapy is a holistic healing treatment that uses natural plant extracts to promote health and well-being. Sometimes it's called essential oil therapy. Aromatherapy uses aromatic essential oils medicinally to improve the health of the body, mind, and spirit. It enhances both physical and emotional health.