Do we really need to drink 8 glasses of water per day?

People commonly know that we need to drink 8 glasses of water a day. There is no standard answer to this question yet. Studies have shown that an average, healthy adult living in a temperate (溫帶的) climate needs about 15.5 cups (3.7 litres) of fluids (液體) a day for men and 11.5 cups (2.7 litres) of fluids a day ...Read More