Under normal circumstances, the daily urine output of human body in summer is less than that in winter. Why?

The water metabolism of human body completes excretion through the urinary function of kidney, the evaporation function of breath and the sweating function of skin. In winter, the water in the human body is mainly discharged by urinary function, and a small amount is discharged by lung respiratory function and skin, so the urine volume is relatively large. In summer, when the weather is hot, skin perspiration increases, and the water breathed in the lungs evaporates, which naturally reduces the amount of urination. Therefore, in summer, the amount of urination is reduced and sweating is relatively more.

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