A more calculated way to look at it is – drink a litre of water per 25kg of bodyweight, so if you weigh 50kg that's around 2 litres of water per day and if you weigh closer to 75kg you should be drinking broadly 3 litres per day.
A healthy adult needs around 35 ml of water each day per kilogram of body weight . At least according to the general guidelines from scientific organisations. A person weighing 50 kilograms requires 1.7 litres, 60 kilograms 2.1 litres, 70 kilograms 2.4 litres and 80 kilograms 2.8 litres.
The U.S. National Academies of Sciences, Engineering, and Medicine determined that an adequate daily fluid intake is: About 15.5 cups (3.7 liters) of fluids a day for men. About 11.5 cups (2.7 liters) of fluids a day for women.
The 70 kg 'standard male' contains 42 liters of water - 60% of his body weight.
An adult needs an average of 1.5 to 2 liters of fluid per day in the form of drinks. Exactly how much fluid you need depends on your age, temperature, exercise, what you eat and your state of health.
As a general rule, you can use this simple calculation. Water (in litres) to drink a day = Your Weight (in Kg) multiplied by 0.033. For example, if you are 60kg, you should drink about 2 litres of water every single day. At 90kg, you'll around about 3 litres of water.
As a general rule of thumb, 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 200 pounds, it is recommended you drink 100 ounces of water if you are performing non-strenuous activities.
Most people need to drink roughly half of their weight (in pounds) in ounces. For example, a 200-pound adult needs approximately 100 ounces of water each day.
You're Peeing Frequently
It may mean you're drinking too much water. Caffeine and alcohol consumption can also cause more frequent urination. "On average, people urinate 6 to 8 times a day, though going up to 10 times a day is within the realm of normal for the water-drinking high-achievers," says Koskinen.
5 litres of liquid is excessive and can lead to depletion of important minerals like potassium sodium, calcium and magnesium leading to electrolyte imbalances. Some people even develop a condition known as 'water intoxication'. So try and be moderate with your liquid intake.
Here is one more reason to enjoy that morning cup of joe: “Coffee counts toward your daily water intake,” says Lauren DeWolf, MS, RD, a registered dietitian with Sharp Rees-Stealy Medical Centers. The water in coffee, tea and other caffeinated beverages helps us meet our daily fluid needs.
Daily fluid intake
The Eatwell Guide recommends that people should aim to drink 6 to 8 cups or glasses of fluid a day. Water, lower-fat milk and sugar-free drinks, including tea and coffee, all count.
2 liters is 67.6 ounces, or about half a gallon (US).
Looking at it in the simplest way possible, a glass of water is already one cup, and a cup equals 8 ounces cups of water. So taking it eight times a day would be64 ounces of water, which is almost 2 liters.
Women should have about 2 litres (8 cups) of fluids a day, and men about 2.6 litres (10 cups). Women who are pregnant or breastfeeding need more fluid each day than other women. Dehydration can happen when the body's fluids are low. It can be life threatening, especially to babies, children and the elderly.
You'll feel less hungry and may even lose weight. You'll probably experience more comfortable digestion (less heartburn). Bowel movements might be easier and more regular. Your teeth and gums will be healthier and more resilient.
May Help Increase Your Metabolism
And some data shows that drinking water can increase the metabolic rate, meaning that it can stimulate more calorie burning at rest. This may, in turn, increase your daily energy expenditure and potentially result in weight loss.
Your weight is one variable that changes the amount of water you should be drinking. 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.
Being over-weight is also an acidity problem, so when you start to hydrate &alkalize you will also start to lose weight, usually quickly aswell. Just by drinking 4 litres of alkaline water per day you will begin to see huge improvements with your weight.
Did you know that drinking 2 litres of water a day cleanses toxins from your body, gives you energy and helps with fatigue? Staying hydrated can bring a good dose of brain power and vitality to your day. It also helps your kidneys regain balance.
When hydrated, you can effectively prevent fatigue, control your body temperature, and reduce stress during your workouts. Manage Weight. Drinking water also helps increase your satiety and improves your metabolic rate, which in turn helps you lose and manage your weight. Improve Brain Functions.