In his book, Buddhist Yoga, Kanjitsu Iijima, notes: "Drinking water has life in it. Do not kill it before drinking. Let us drink fresh, unboiled water and stop drinking boiled water. Goldfish cannot stay alive in cooled, boiled water." He recommends drinking a glass of water upon arising as the body dehydrates during a long night of sleep. "The cells of the body will rejoice in being washed and purified" upon the first morning drink of water.