{"id":60639,"date":"2023-10-03T11:59:29","date_gmt":"2023-10-03T15:59:29","guid":{"rendered":"https:\/\/www.singlecare.com\/blog\/?p=60639"},"modified":"2026-03-10T15:58:02","modified_gmt":"2026-03-10T19:58:02","slug":"how-much-water-drink-day","status":"publish","type":"post","link":"https:\/\/www.singlecare.com\/blog\/how-much-water-drink-day\/","title":{"rendered":"How much water should you drink a day?"},"content":{"rendered":"

Adequate water intake can impact the entire body. Brain function, muscles, organs, waste removal, and skin elasticity are all affected by the amount of water an individual consumes. In addition, water helps regulate body temperature and majorly contributes to the absorption of vitamins and nutrients as part of the digestive process. Weight loss is another important <\/span>benefit of drinking water<\/span><\/a>. Drinking water can also help remove toxins from the body and keep the immune system strong.\u00a0<\/span><\/p>\n

Now that you know why water is important, let\u2019s dive into how much water you should drink daily.<\/span><\/p>\n

How much water should you really drink in a day?<\/span><\/h2>\n

Throughout the day, the body continually loses fluids through perspiration, urination, and even respiration. <\/span>Like nutrition, hydration needs vary from person to person. Age, gender, activity levels, environment, diet, metabolism, and overall health contribute to calculating, \u201cHow much water should I really drink in a day?\u201d\u00a0<\/span><\/p>\n

The “8×8” rule explained<\/span><\/h3>\n

The \u201c8×8\u201d rule was a suggested daily intake (for the average adult) of eight, 8-ounce glasses of water (a total of 64 ounces, almost 2 liters, throughout the day). This goal may be more or less than what some individuals need, depending on exercise, activity level, and exposure to hot climates. Modern research suggests a \u201c<\/span>drink to thirst<\/span><\/a>\u201d strategy, which involves consuming more fluids if there are signs of dehydration, such as infrequent or dark urine.\u00a0<\/span><\/p>\n

Body size contributes to how much water one should drink, so if you\u2019re looking for an approximate number of ounces of fluid intake, there\u2019s another \u201crule\u201d to consider. The equation is simple: half of your body weight equals the number of ounces recommended to drink per day. A healthy adult weighing 160 pounds divides that number by two to get the number 80. A good approximation of fluid needs for that individual is 80 ounces of water daily.\u00a0<\/span><\/p>\n

While this formula may be applied to the average person, athletes need a much higher amount of fluids to stay hydrated. In fact, a 1:1 ratio of body weight to ounces of water per day is suggested to determine the amount of fluid needed for athletes. Therefore, if an athlete weighs 150 pounds, the total water intake should also be about 150 ounces for the day.\u00a0<\/span><\/p>\n

Factors that affect water consumption needs<\/span><\/h2>\n

Consider age and gender<\/span><\/h3>\n

Water consumption is not one size fits all. Age and gender should be taken into consideration when calculating your fluid intake. Generally, men need more water than women, and children need less water than adults. Fortunately, the formula of half of one\u2019s body weight equaling an approximate number of ounces of water to drink daily applies to men, women, and children. If a child weighs 50 pounds, then approximately 25 ounces of water are recommended daily for that child. These numbers vary from individual to individual.<\/span><\/p>\n

The <\/span>American Academy of Pediatrics<\/span><\/a> suggests that infants of about 6 months of age can begin to drink 4 to 8 ounces of water per day to stay hydrated. Below is a chart that further describes how much liquid children should drink based on their age.\u00a0<\/span><\/p>\n\n\n\n\n\n\n\n
Age<\/b><\/td>\nCups of beverages (water, milk or juice) per day*<\/b><\/td>\n<\/tr>\n
6 months – 1 year<\/span><\/td>\n\u00bd to 1 cup<\/span><\/td>\n<\/tr>\n
1-3 years<\/span><\/td>\n4 cups<\/span><\/td>\n<\/tr>\n
4-8 years<\/span><\/td>\n5 cups<\/span><\/td>\n<\/tr>\n
8+ years<\/span><\/td>\n7-8 cups<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

*May vary by person depending on factors such as activity level, heat, and humidity.\u00a0<\/span><\/i><\/p>\n

Remember, other foods and fluids contribute to hydration needs. Look for signs of dehydration, and be sure to drink extra water during prolonged exercise or high-heat situations.<\/span><\/p>\n

Older adults are at a higher risk for potential long-term damage to the body and brain if they experience severe dehydration. Lacking enough fluids can cause memory loss and confusion associated with <\/span>dementia<\/span><\/a> in an aging brain. If severely dehydrated, aging populations are more susceptible to urinary tract infections, kidney stones, kidney failure, and other serious health conditions. Older people, especially those who take medication, should consult their healthcare providers about their individual water intake needs.<\/span><\/p>\n

Physical activity levels<\/span><\/h3>\n

Another factor to consider when determining how much water to drink is one\u2019s level of physical activity. Energy expenditure, such as exercise, employment, and lifestyle, all play a role in fluid consumption. For example, if you are a landscaper and it is hot outside, the need to drink extra water is greater than someone working at a computer in an air-conditioned office. Increased activity levels equal an increased need to hydrate.\u00a0<\/span><\/p>\n

Perspiration and respiration greatly contribute to the loss of bodily fluids. You should intentionally drink before, during, and after a high-intensity workout. Drinking excess water up to two hours or more prior to exercising can help prepare the body for fluid loss through sweating. Consuming water every 15 to 20 minutes while working out will safely keep you hydrated. Following exercise, more water or an electrolyte beverage can ensure that all fluids have been restored and prevent dehydration. A good indicator that fluid levels are healthy is by assessing urine color. Urine should be a light or pale yellow.\u00a0<\/span><\/p>\n

Climate and weather conditions<\/span><\/h3>\n

The weather and climate can affect your hydration status. You can anticipate needing to drink additional water if you are exposed to hot or dry climates. Remember to take plenty of water on outings, such as hiking and biking, especially in remote areas.\u00a0<\/span><\/p>\n

While the need to stay hydrated on hot summer days may seem obvious, other weather conditions and elevation can play a role in how our bodies need to replenish liquids. In colder winter months, the body needs to stay hydrated to keep warm. Hot tea and brothy soups are a great way to stay warm and hydrated. Even elevation can affect the need to drink water. In general, people may need to hydrate more when living at higher elevations.<\/span><\/p>\n

Pregnancy and breastfeeding<\/span><\/h3>\n

It is a common recommendation for women to increase water consumption during pregnancy. Drinking additional water supports the increase of blood volume along with amniotic fluid and fetal circulation. Furthermore, drinking water can help relieve pregnancy-related constipation. The risk of constipation increases for a variety of reasons, including taking iron supplements, which is suggested for most pregnancies.\u00a0<\/span><\/p>\n

Tara Daystar<\/span><\/a>, a lactation consultant and founder of <\/span>Roots Midwifery<\/span><\/a>, suggests that there is a need to increase water consumption while pregnant. She advises, \u201cDrink to thirst is a good practice as the body will naturally let you know if you need to hydrate.\u201d Daystar reinforces that looking for signs of dehydration, such as dark urine, and consult your doctor or healthcare provider about your specific needs while pregnant or breastfeeding.\u00a0<\/span><\/p>\n

A breastfeeding mother should continue to drink <\/span>extra fluids<\/span><\/a> to stay hydrated. While increased fluids do not equate to increased milk supply, milk production can become more difficult if a nursing mom becomes dehydrated. Some mothers get in the habit of enjoying a glass of water while they nurse their babies. When breastfeeding, the body releases oxytocin, which stimulates thirst in order to encourage the body to replenish lost fluids.<\/span><\/p>\n

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