In general, normal adults need about 1,500 to 2,000 ml of water per day, which is about 7 to 8 glasses of water. On this basis, the appropriate amount of water to drink is also related to the condition of the human body and the presence of certain diseases.
In high temperature environment, long time and large amount of exercise, large amount of sweating, vomiting, diarrhea and other conditions, due to the loss of water becomes large, should be based on the need to timely replenishment of adequate amount of water, on the basis of normal drinking water in moderation to increase the amount of 1000 ~ 2000ml, can be determined on a case-by-case basis.
For some people with underlying diseases, such as patients with significant cardiac insufficiency or renal insufficiency, they should not drink according to normal standards, and should limit the amount of water they drink according to their own conditions on top of normal water intake. At the same time, patients are advised to monitor the amount of water in and out of the body to ensure that the amount of water out of the body is greater than the amount of water in, to prevent water retention in the body, aggravating the burden on the heart and kidneys.
It is also worth noting that water should be consumed in small amounts and distributed at multiple times of the day to avoid drinking large amounts of water at once.