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Hi Lybrate user, About 60% of your body weight is made of water. You need it for every single body function how much water you need varies, depending on how active you are and what type of climate you live in, among other things. Even if you?re not very active or live in a humid climate, you lose water every day through your breath, sweat, pee, and bowel movements. For men, it recommends a total of 13 cups (about 3 liters) of fluid -- period -- each day. For women, 9 cups (a little over 2 liters) of fluid -- total -- each day If you?re outside on a hot day, or doing something that makes you sweat a lot, you?ll need to drink more fluids to stay hydrated. The same is true if you have an illness that causes you to throw up, have diarrhea, or run a fever. Coffee and tea provide water, too. But, they also contain caffeine, which can make you lose more water when you pee.
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Based on your body surface area approx 1.5 to 2 lts for an average person. Again depends on your digestive fire. If it's poor avoid excess drinking. Drink hot water instead.
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