For human health, the most ideal drink is also cool water, the so-called cool water, is to pour boiling water into a teacup, cover the lid, and so cooled to 20 ℃ -25 ℃ when it became a cup of cool water.

Research has found that the natural cooling of boiled water, chlorine in the water than the general natural water to reduce 50%, the molecular structure of water will undergo certain changes in the surface tension of water, water density, electrical conductivity and other physicochemical properties have changed, and its bioactivity than natural water to be 4-5 times higher than water, and living cells of living organisms in the water is very similar, and therefore easy to penetrate the cell membrane and be absorbed by the human body. Cell membrane and be absorbed by the body, promote metabolism, increase the hemoglobin content in the blood, improve immune function. U.S. scholars also found that people who often drink cool water, lactate dehydrogenase activity in the body is higher, the lactate metabolism in muscle tissue is sufficient, so it is not easy to feel fatigue.