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You have probably heard "eight glasses a day" or "three litres". Neither is a rule. How much you need depends on your size, the weather, how much you sweat and what you eat. The good news is that your body gives you simple signals.
This is general nutrition information, not medical advice. If you have kidney, heart or liver disease or are told to restrict fluids, follow your doctor's limit, not the general advice below. If you have a medical condition, are pregnant, or take regular medicines, check changes to your diet with your doctor or a registered dietitian.
Most healthy adults do well on roughly 2 to 3 litres of total fluid a day, from all drinks and food. In India's hot months, if you work outdoors, or if you exercise, you need more. A person sitting in an air-conditioned office needs less than a person in a hot kitchen or on a construction site.
This is a starting range, not a target to force down. Many people drink well beyond their needs trying to hit a number.
Sugary soft drinks and packaged juices also contain water but are poor choices for other reasons. See how much sugar per day.
| Urine colour | What it usually means |
|---|---|
| Pale straw or light yellow | You are well hydrated. Carry on. |
| Clear and colourless, many times an hour | You may be drinking more than you need. |
| Dark yellow or amber | Drink more, especially if it happens in the morning and during hot days. |
| Very dark, brown or red | See a doctor, particularly if it does not clear up. Some foods and medicines also change colour. |
General guide. Vitamin B tablets turn urine bright yellow, and beetroot can colour it pink, so interpret the colour with that in mind.
Thirst is also a reliable signal for most healthy adults. Drink when thirsty, and drink a little more in the heat. Older adults feel thirst less sharply and may need to drink on a schedule.
Yes, though it is rare. Drinking very large amounts of water in a short period, especially during long endurance events, can dilute the blood's sodium and cause a dangerous condition called hyponatraemia. Forcing yourself to drink beyond thirst is not helpful. Spread your drinks through the day.
Answer a few quick questions and get a free Indian diet plan. Take it to your doctor or dietitian to adjust if you have a health condition.
Get my free plan → Ask the coachRoughly 2 to 3 litres of total fluid suits most healthy adults, including drinks and the water in food, more in hot weather or when exercising.
Yes. In moderate amounts, they add to your daily fluid and do not dehydrate you.
Check your urine colour. Pale straw yellow is ideal, and dark yellow means you need more.
It can help a little if it replaces sugary drinks or is taken before a meal, but water is not a fat-burning trick.
Figures marked with a tilde (~) are rounded estimates drawn from the sources above using standard home portions; real foods and recipes vary. This article is educational information, not medical or nutrition advice, and does not replace your doctor or dietitian.
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