calculate how many ounces of water should you drink a day?
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To help you establish a baseline, you can use the following rule-of-thumb equation described in U.S. News & World Report. In short, the equation tells you to take half your body weight, and drink that amount in ounces of water. In the example, notice that you should be drinking more than 12 glasses of water, not eight!
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The formula for minimum, daily hydration (not inclusive of training) is as follows: ½ body weight in ounces. So, if I weight 200 lbs., at a minimum, I should drink 100 oz. of water every day without exercise. For every hour of exercise add another 20 ounces of water to your daily intake.
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If you really want the water you drink to help you lose weight, you should follow the “8x8” rule recommended by most nutritionists: Drink eight eight-ounce glasses of water per day for weight loss and to maintain an ideal weight.
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Most people need about 8 glasses of water or water equivalents a day (one glass = 8 ounces or 1 cup). This amount varies, though, depending on your weight, gender, age, activity level, diet, health, pregnancy, and the climate you live in.
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On average, a person should have eight 8oz glasses or roughly two liters of water every day. During the warmer months, you should drink roughly two and a half liters. Sticking with water is the best way to stay hydrated.
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That's how many ounces of water you should drink per day. For instance, a person who is 200 pounds, should drink 100 oz. of water per day to be adequately hydrated. (That's 12.5 glasses of water!)
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As a general rule, we recommend eight 8-ounce glasses of fluid per day. About 70-80% should be provided by beverages – and at least half of that from water, with lesser contributions from tea, coffee, milk, and other beverages. The remaining 20-30% should come from watery foods such as fruits and vegetables.
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According to the Mayo Clinic, the recommendation is 3.7 liters (124 ounces) for men and 2.7 liters (92 ounces) for women. Your body size, climate, level of activity and overall health can also affect how much water you need.
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How much water do you need to drink every day? A common recommendation is to drink six or eight 250 mL (8 fl oz) glasses of water or other fluid every day.
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The Institute of Medicine (IOM) recommends that men drink at least 101 ounces of water per day, which is a little under 13 cups. They say women should drink at least 74 ounces, which is a little over 9 cups.
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Second, you should multiply your weight by 2/3 to calculate how much water you need to drink on a daily basis. For example, if you weigh 160 pounds, the calculation will be as follows: 160 × 2/3 = 107 ounces (3.15 liters) of water per day.
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Though it really varies based on your body type and size, how active you are, and so on, the general rule of thumb is somewhere between eight and 10 8-ounce glasses of water (from all sources) a day.
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You should drink half your body weight in ounces of water per day. Yup, that's right! So if you weigh 120 pounds, you should be drinking 60 ounces of H₂O each and every day.
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Does Drinking a Gallon of Water a Day Have Benefits? Hydration needs are highly individual and depend on many factors, including your body size and activity level. Many people follow the 8x8 rule, which recommends drinking eight 8-ounce (237-ml) glasses, or about half a gallon (1.9 liters), of water daily.
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Multiply by 2/3: Next you want to multiply your weight by 2/3 (or 67%) to determine how much water to drink daily. For example, if you weighed 175 pounds you would multiply that by 2/3 and learn you should be drinking about 117 ounces of water every day.
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What about the advice to drink 8 glasses a day? You've probably heard the advice, "Drink eight 8-ounce glasses of water a day." That's easy to remember, and it's a reasonable goal. Most healthy people can stay hydrated by drinking water and other fluids whenever they feel thirsty.
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The Institute of Medicine (IOM) recommends that men drink at least 101 ounces of water per day, which is a little under 13 cups. They say women should drink at least 74 ounces, which is a little over 9 cups. Still, the answer to exactly how much water you should drink isn't so simple.