DESC: Vapor Therapy for Healthful Living Water is one nutrient that all forms of life must have to survive All functions of your body require sufficient moisture to work properly When your body does not have sufficient moisture it functions poorly Dry arid climatic conditions are usually the culprit colds and flu can further cause dehydration Colds and flu begin making their seasonal rounds during fall and winter Part of the reason for increased respiratory illnesses during this time is because the humidity level in the air reaches its yearly lows Central heating units in homes and offices further remove moisture from the air The relative humidity may drop to as low as 10 drier than the air in the Sahara Desert Most people experience problems when the relative humidity drops below 25 A comfortable humidity level should not be higher than 50