I drink at least 10 to 12 cups a day. At my lunch, I usually drink 1 quart during a 30-minute lunch. A friend of mine said she believes that may not be safe. Thanks for your time.
Water balance is controlled by the kidneys.
It is also influenced by adequate protein balance, acid-base balance and sodium intake. If you take a large volume of water into your body, you will put out a large volume of water. If you drink a small amount, your kidneys will produce a smaller output. You are drinking enough water if your urine is pale yellow. If it is a rich yellow color, you are drinking too little.