<;P>;PROBLEM TO BE SOLVED: To provide drinking water which can promote the heat production of a living body in a daily seasonable intake to enhance the metabolic activity of the living body. <;P>;SOLUTION: Provided is the drinking water promoting the heat production of the living body in a daily reasonable intake by adjusting hardness to 60 to 2,000 and, optionally adjusting inner pressure of carbon dioxide to 1.0 to 3.8 kg/cm<;SP>;2<;/SP>;at 20°;C. <;P>;COPYRIGHT: (C)2010,JPO&INPIT