The doctor told you not to drink more water, which is correct. This is from a biological point of view. In biology, the first function of human body's intake of water: water will provide power for your body and speed up metabolism. Water is like gasoline. You can only drive a gasoline car. For example, your body needs 1000mL of water to provide power for your body, so drinking 1000ml won't make you gain weight. If you drink 1500ml and have 500ml more, part of the 500ml will be discharged directly and the other part will be discharged. Therefore, if you drink too much water, you will gain weight.

But you feel thirsty. You'll get fat if you don't drink it! Similarly, from a biological point of view, without water, many substances can not be excreted, and the metabolism is slow, which will not only increase weight, but also cause constipation and other diseases.

The doctor told you not to drink more water, just enough. You are thirsty, which means there is not enough water. You must drink it!