Add another 8 ounces for every 25 pounds you are overweight. While all fluids help to replenish what the body uses up during the course of a day, water is considered the perfect fluid replacement for most of us. It doesn't require any energy to digest, and the body is able to transport it quickly and easily to where it's needed. But it's not your only choice. But a few beverages have properties that make them less than ideal.
Most experts say one or two cups of coffee or one alcoholic beverage per day is acceptable.
If you drink more than that, consider upping your intake of water to compensate for what you're losing. Some experts recommend drinking an extra glass of water for each soda or cup of coffee you drink. That's a challenge for some people, especially those who dislike water. So I don't drink a lot of water, but I drink decaffeinated coffee, and I love fruits and vegetables. I get a lot of my fluids that way.