![]() ![]() Get the facts: Drinking water and intake.You can learn more about how we ensure our content is accurate and current by reading our editorial policy. We link primary sources - including studies, scientific references, and statistics - within each article and also list them in the resources section at the bottom of our articles. Medical News Today has strict sourcing guidelines and draws only from peer-reviewed studies, academic research institutions, and medical journals and associations. ![]() The body even has a water-regulating hormone - arginine vasopressin - that manages thirst, fluid excretion, and the body’s water balance. Most of the time, the body will give a person cues that tell them to drink more or less fluid. Conversely, eating a lot of fruits and vegetables means they may not need to drink as much. In addition to body size and activity level, other everyday factors can play a role in determining how much water a person should drink.įor example, consuming more sodium and protein means a person may need to drink more water. If they drink too little, it will excrete less. If a person drinks too much water, the body will excrete more. The body is constantly working to maintain a balance of water coming in and water going out. The body is good at regulating itself, and water is no exception. However, this is an overly simplistic answer to a complicated question. It is often said that people need to drink at least eight 8-ounce (oz) glasses of water per day. What about eight 8-ounce glasses of water? Additionally, they receive hormonal signals to conserve or release water into the urine if the brain detects changes in the concentration of the solutes in the blood. The kidneys also regulate the balance of electrolytes, such as sodium and potassium, in the body fluids. There are two main ways the body does this: (1) through thirst, which tells a person to drink more water and (2) through urine output, in which the kidneys regulate the water we consume by either emptying it into the urinary bladder or holding onto it in the blood plasma. ![]() Most of the time, the body’s sensitive natural mechanisms maintain appropriate fluid levels. However, if people exercise for long periods, they may benefit from consuming water or an electrolyte beverage. This means that, while it is important to be hydrated before a workout - and a person should aim to replace fluid lost after exercise - drinking water during a workout may not be essential. However, a study published in the International Journal of Exercise Science concludes that a loss of up to 4 percent of water has no effect on real-world sports performance. These changes, researchers say, can lead to reduced performance. Older guidance from the American College of Sports Medicine (ACSM) advises drinking water during activity to prevent dehydration that leads to a decline in body weight of more than 2 percent and changes in electrolyte balance.
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