Drinking water itself is not fat, because water does not contain calories. And more fat with their own constitution, diet structure is unreasonable, low metabolism and pathological conditions. 1. own constitution: if you feel like drinking water will be fat, may be related to congenital constitution, such as obesity genetic constitution, also easy to appear fat. 2. Unreasonable dietary structure: If you usually consume foods with high sugar content or high fat content for a long time, such as cakes and fat meat, it is easy to gain weight. 3. Low metabolism: if their own basic metabolism is low, it is generally not easy to lose weight, even through exercise and diet control, it will be easy to put on weight. 4. Pathological conditions: there will also be some people who drink water may appear after the whole body edema, may also feel fat, such as liver and kidney insufficiency. It can be seen that more fat and drinking water does not have much direct relationship, more in the daily life of the diet, their own constitution and other factors, if you find that the weight gain rapidly, it is recommended to seek medical advice to find out the reasons in a timely manner.