How to Drink More Water

Most people drink less water than they think. Mild dehydration shows up as fatigue, headaches, poor focus, and a vague sense of not feeling well — symptoms we usually blame on everything else. Getting water right is one of the easiest health wins available, and unlike most habits, it pays back the same day.

Use our water intake calculator to size your daily target, then use the tactics below to actually hit it without constantly thinking about it.

1. Know your target

The old “8 cups” is a rule of thumb, not a prescription. A better starting point is about 35 ml per kg of body weight (roughly 0.5 oz per pound), plus extra for exercise and heat. A 70kg person works out to ~2.5 L plus an extra ~350ml per 30 minutes of exercise.

2. Always have water within reach

The single biggest lever. A refillable bottle on your desk, in your car, in the living room. Out of sight = out of mind. If you have to stand up and go to the kitchen for water, you drink a lot less. Position beats willpower.

3. Drink a big glass first thing

You wake up mildly dehydrated from 7–9 hours without water. A full glass (500ml is ideal) immediately after waking rehydrates you and jumpstarts the day’s intake. Many people find this single habit knocks out 20% of their target before the day starts.

4. Anchor water to existing habits

Habit stack it: a glass before each meal, a glass on entering the office, a glass at the top of each hour. Attaching water to triggers you already do removes the “remembering” step that usually fails.

5. Use a marked bottle

A bottle with hour-marks or a 1L bottle you know you’re trying to finish twice beats a random glass. Visual progress is motivation. Clear bottles are better than opaque for this reason.

6. Treat coffee and tea as part of intake

The “coffee dehydrates you” myth is mostly wrong — caffeine is a mild diuretic, but not enough to cancel the water in the cup. Coffee and tea count. So does sparkling water, and water-rich foods (soups, fruits, vegetables).

7. Sparkling water is your friend

If plain water feels boring, sparkling water (unsweetened) is just as hydrating and more interesting. Adding a slice of lemon, cucumber, or mint makes it even more drinkable. Avoid sugary drinks — they add calories without improving hydration meaningfully.

8. Drink before thirst

Thirst is a late signal. If you’re thirsty, you’re already mildly dehydrated. Sip regularly throughout the day — 100–200 ml every 30–60 minutes — rather than downing a liter when you finally notice.

9. Electrolytes for long workouts or hot weather

For exercise over 60 minutes or days in heat, plain water isn’t enough — you also need sodium and potassium. A pinch of salt in water, an electrolyte tablet, or coconut water. Most people don’t need this day-to-day, just for heavy sweating situations.

10. Check your urine color

Easiest real-time feedback. Pale yellow = hydrated. Dark = more water needed. Completely clear = you might be over-drinking. One glance tells you where you stand without any tracking apps.

11. Skip excessive amounts

More isn’t always better. Drinking 5+ liters a day when you’re sedentary can dilute electrolytes and cause problems. Size the target to your body and activity, not to an Instagram challenge.

12. Track for two weeks, then stop

Count intake for 10–14 days so you know what your actual intake looks like. After that, most people internalize the rhythm and don’t need to track. Pair with our habit-building guide to lock it in with triggers.

Your first three days

Check your target in the water calculator. Fill a bottle to that volume in the morning; drink half by lunch, the rest by 6pm. Drink a glass first thing. Track roughly for a week. That’s the whole system — everything else is decoration.