how much water does a person need to drink in one day?
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The National Academies of Sciences, Engineering, and Medicine determined that an adequate daily fluid intake is: About 15.5 cups (3.7 liters) of fluids for men. About 11.5 cups (2.7 liters) of fluids a day for women.
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To prevent dehydration, you need to drink adequate amounts of water. There are many different opinions on how much water you should be drinking every day. Health authorities commonly recommend eight 8-ounce glasses, which equals about 2 liters, or half a gallon.
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Divide your weight by 30. The answer is the number of litres you should be drinking per day. So, if you weigh 60 kilos for example, you should drink 2 litres of water a day, whereas if you weigh 80 kilos, you should drink 2.6 litres (2 litres and 600 ml) of water per day.
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We recommend drinking 64 ounces of water each day. Consult with your healthcare provider prior to changing the amount of water you drink as it can affect certain health conditions and medications.
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Most people need about 8 glasses of water or water equivalents a day (one glass = 8 ounces or 1 cup).
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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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One study looked at adults who consumed less than 41 oz (1.2 liters) of water per day. When they increased their water intake to 85 oz (2.5 liters) per day, they were happier, had more energy and felt calmer ( 19 ).
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Store at least one gallon of water per person per day for three days, for drinking and sanitation. A normally active person needs about three quarters of a gallon of fluid daily, from water and other beverages. However, individual needs vary depending on age, health, physical condition, activity, diet and climate.
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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. For some people, fewer than eight glasses a day might be enough.
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Each person uses about 142 litres of water each day. The average household uses 349 litres of water each day1.
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Says nutritionist Venu Adhiya Hirani, “While the general belief is to drink eight to 10 glasses of water, it is advisable to drink 12 to 15 glasses of fluids which includes water, tea, buttermilk, soup, etc. This would amount to an intake of around 2.5 litres of fluids everyday.”
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Increased water intake can help people avoid dehydration and heatstroke on hot days. On average, people should drink eight to 10 glasses of water a day just to stay hydrated and healthy, according to the Center for Disease Control.
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Water requirements can vary based on a variety of factors, including age, body weight and activity level. However, most research recommends drinking around 1–2 liters (34–68 ounces) of water per day to stay well-hydrated.
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“It depends on your size and weight, and also on your activity level and where you live,” Nessler says. “In general, you should try to drink between half an ounce and an ounce of water for each pound you weigh, every day.” For example, if you weigh 150 pounds, that would be 75 to 150 ounces of water a day.
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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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But there are some basic guidelines: For men, the Institute of Medicine (IOM) recommends a total of 13 cups (about 3 liters) of fluid each day. For women, they suggest 9 cups (a little over 2 liters) of fluid each day. Pregnant women should drink about 10 cups of water daily.
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Instead, think about how much you weigh and divide that number in half. 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.