Why is there so little urine in hot weather?

The amount of urine is not only related to the amount of water ingested (not just the water you drink, as long as it enters the body), but also related to temperature, exercise, etc. In hot weather, people have to perspire to lower their body temperature. Most of the water taken into the body is excreted in the form of juice, so less water is excreted in the form of urine. Therefore, in hot weather, you should replenish water in time to ensure sufficient sweat discharge to avoid heat stroke. Similarly, during strenuous exercise or physical labor, more sweat is discharged and urine is reduced accordingly.