Why do the kidneys produce less urine even though athlete drinks more water?

When an athlete drinks more water, the kidneys do not necessarily produce less urine. In fact, the kidneys typically increase urine output in response to increased fluid intake. This is because the body needs to eliminate the excess water that is consumed.

However, there are a few situations in which the kidneys may produce less urine even though an athlete drinks more water. One possibility is that the athlete is dehydrated. When the body is dehydrated, the kidneys conserve water by producing less urine. Another possibility is that the athlete has a kidney disorder that affects urine production.

If an athlete is concerned about their urine output, they should talk to their doctor.