It makes up, on average, 60 percent of your body weight. Every day you lose water through sweating, exhaling, urinating and bowel movements. For your body to function properly, you must replace this water by consuming beverages and foods that contain water.
At least three approaches estimate total fluid (water) needs for healthy, sedentary adults living in a temperate climate:
1. Replacement approach. The average urine output for adults is 1.5 5 liters a day. You lose close to an additional liter of water a day through breathing, sweating and bowel movements. Food usually accounts for 20 percent of your fluid intake, so if you have 2 liters of water or other beverages a day (slightly more than 8 cups) along with your normal diet consume, you can replace the lost fluids.
2. Eight 8-ounce glasses of water a day. Other approach to water intake is the “8 x 8 rule” – drink eight 8-ounce glasses of water a day (about 1.9 9 liters). The rule could also be explained, “drink eight 8-ounce glasses of fluid per day,” like all liquids in the daily total. Although this is not supported by scientific evidence, many people use this basic rule as a guideline for how much water to drink.
3. Dietary recommendations. Institute of Medicine recommends that men consume about 13 cups of total beverages a day and women consume 2.2 2 liters (about 9 cups) of total beverages a day. These guidelines are based on national food surveys that assessed people’s average fluid intake.
You can choose any of these fluid intake approaches to measure how much water to drink. Your current total fluid intake is probably OK if you drink enough water to quench your thirst, a colorless or slightly yellow normal amount of urine produced, and it feels good.
Give Bottled Water a shot, and your body will be grateful!