Water is an essential nutrient for maintaining normal metabolism and life activities in the human body. In mild climatic conditions, low physical activity level adult males drink 1700ml of water per day and adult females drink 1500ml of water per day. Water is one of the seven major nutrients in the human body, and is an essential nutrient for maintaining normal metabolism and life activities. You should take the initiative to drink water, in small amounts and many times. Drinking water can be done at any time of the day, 1 cup each time, each cup is about 200 ml. You can drink 1 cup of water in the morning, 1 cup of water in the evening, and a cup of water every 1~2 hours in other times. Generally, you should drink at least 1500ml of water every day, and you can increase the amount of water according to your activities and the degree of hot weather. It is recommended to drink water at a temperature of 10~40℃ and to replace sugary drinks with plain water or light tea.