Can you lose weight by learning to drink water? ! A weight-loss manual recently published by the German Consumer Protection Center points out that drinking at least 2 liters of water a day will help some overweight people lose weight. The manual says that overweight people generally eat more and drink less, and sometimes they mistake thirst for hunger and eat too much. For this kind of people, drinking more water helps to lose weight. The manual suggests that people who don't like boiled water can drink more unsweetened tea or mix fruit juice with water. However, the instructions remind you not to drink too much coffee and black tea every day, and it is best not to drink beer for dinner, because this drink contains more calories, which is not conducive to weight loss. It is also mentioned in the manual that water can promote people's metabolism, improve skin color and make skin smooth.