You've probably heard the advice to drink eight glasses of water a day. That's easy to remember, and it's a reasonable goal. Most healthy people can stay hydrated by drinking water and other fluids whenever they feel thirsty. For some people, fewer than eight glasses a day might be enough.
The 7 common signs you're not drinking enough water include thirst and dry mouth, dark, infrequent urine, fatigue and headaches, dizziness, dry skin, constipation, and bad breath, all signaling your body needs fluids for functions like toxin flushing, nutrient transport, and maintaining energy, with urine color (pale yellow is ideal) being a great self-check.
How much daily total water do you need? For healthy individuals, the average daily water for men is about 15.5 cups and for women about 11.5 cups. That might mean you need only four to six cups of plain water, depending on other fluid sources such as coffee, tea, juice, fruits, and vegetables.
You should aim to drink water consistently throughout the day, with many experts suggesting about one cup (8oz or 250ml) per hour for the first 10 hours you're awake as a good baseline, rather than forcing yourself hourly or every two hours; this spaced intake prevents the body from excreting large amounts too quickly (a "bolus response") and helps maintain steady hydration, adjusting based on activity, climate, and thirst.
You've probably heard the advice to drink eight glasses of water a day. That's easy to remember, and it's a reasonable goal. Most healthy people can stay hydrated by drinking water and other fluids whenever they feel thirsty. For some people, fewer than eight glasses a day might be enough.
However, if you suspect you may be overhydrated, look for symptoms like cloudy thinking, nausea and vomiting, muscle weakness, spasms or cramps and headaches. In severe cases symptoms could include mental confusion, seizures, unconsciousness and even coma.
The 1-2-3 drinking rule is a guideline for moderation: 1 drink per hour, no more than 2 drinks per occasion, and at least 3 alcohol-free days each week, helping to pace consumption and stay within safer limits. It emphasizes pacing alcohol intake with water and food, knowing standard drink sizes (12oz beer, 5oz wine, 1.5oz spirits), and avoiding daily drinking to reduce health risks, though some health guidance suggests even lower limits.
We grab a bottle of water and guzzle it down, often in one go, to satisfy that thirst. But that's not really the best way to hydrate, says Lindsay Baker, PhD, a senior principal scientist at the Gatorade Sports Science Institute. “In general, it's best to sip a little bit throughout the day,” Baker says.
Yes, coffee can count as water intake to meet your daily hydration goals, but only in moderation. Drinking too much coffee can actually cause you to lose water.
Many people wonder how long it takes to pee after drinking water, but it depends on a variety of factors. Generally, it takes your body 9 to 10 hours to produce 2 cups of urine. A properly hydrated person with an almost full bladder will need to urinate between five to fifteen minutes after drinking water.
For everyday hydration, water is best, but for intense exercise or significant fluid loss, electrolyte drinks (like sports drinks or tablets) are superior for replenishing sodium and potassium; milk, coconut water, and even unsweetened tea/coffee also count, while natural options like chia seeds or 100% juice (in moderation) offer extra benefits. The "best" drink depends on your activity level, with plain water for normal days and electrolyte-rich drinks for strenuous activity or heat.
Even mild dehydration (1–2% loss of body weight in water) can impair alertness, memory, concentration, and mood. Drinking a litre of water immediately restores fluid balance, reduces brain fog, enhancing mental sharpness and stamina right from the get-go.
"Sparkling water, tea, herbal tea and coffee all count towards your total fluid intake for the day.
The National Academy of Medicine recommends that men over age 51 drink 13 cups of water daily, and women in the same age range should aim for 9 cups. However, these amounts include all forms of fluid. Others suggest that an amount of water equal to one-third of your body weight is a good idea.
Best Hydrating Drink Options
Examples of drinks that are suitable for seniors could be water with a twist of lemon juice, seltzer mineral waters, unsweetened herbal teas, or vegetable juices. Of course, the best option overall is to simply drink plain water.
Milk is more hydrating than water
The same can be said for oral rehydration solutions that are used to treat diarrhea. Those contain small amounts of sugar, as well as sodium and potassium, which can also help promote water retention in the body.
Drink water before you feel thirsty. You should drink a small amount of water many times a day, and drink 100-200ml of water every time. Drink one glass of water in the morning and evening respectively, and drink water every 1-2 hours in the rest of the day.
25 water-rich foods to help you stay hydrated this summer
If you do experience early symptoms of ARLD, these are often quite vague, such as:
To keep health risks from alcohol to a low level if you drink most weeks: men and women are advised not to drink more than 14 units a week on a regular basis. spread your drinking over 3 or more days if you regularly drink as much as 14 units a week. if you want to cut down, try to have several drink-free days each ...
Is a bottle of wine a day too much? The honest answer is 'yes'. UK Chief Medical Officers advise that both men and women should not regularly drink more than 14 units of alcohol per week, spread over three or more days. They also say that women should have no more than one a day.
What are the symptoms of water intoxication?
Spring water is among the healthiest water to drink because it offers several benefits. It is naturally purified from an underground source, which means it is free of harmful contaminants like lead and chlorine. Since it does not undergo added filtration before bottling, it retains the beneficial minerals in the water.
Typically ingesting 1-2 liters or more within an hour of testing is sufficient to dilute most specimens for a 2–6 hour period. Diuretics such as caffeine and cranberry juice and some medications, including water pills may cause diluted urine samples.