The first thing is to exercise moderately at ordinary times.
Secondly, drink plenty of water, but it is best not to drink frozen drinks, because the kidney belongs to water in the five elements, and drinking cold things will increase the burden on the kidney. Because you drink cold water, after a few minutes, you will find that the temperature of urine is the same as your body temperature, which means that the kidney raises the temperature of cold water you drink to body temperature within a few minutes. Will this increase the burden?
Don't overdo your sex life, and eat some foods that are good for your kidneys.