Question 1

How much water should I drink per day?

Accepted Answer

General guidelines recommend 2-3 liters (8-12 cups) of water per day for most adults, but your actual needs depend on your body weight, activity level, and climate. A commonly used formula is 30-35 mL of water per kg of body weight. A 70kg person at moderate activity needs approximately 2,100-2,450 mL (2.1-2.45 liters) per day.

Question 2

Does coffee or tea count toward daily water intake?

Accepted Answer

Yes — despite being mild diuretics, coffee and tea do contribute to overall hydration. Research shows that moderate coffee consumption (up to 4 cups/day) does not cause net dehydration. However, pure water, herbal teas, and water-rich foods are more efficient for hydration than caffeinated beverages.

Question 3

How do I know if I'm drinking enough water?

Accepted Answer

The most reliable indicator is urine color. Pale yellow (like lemonade) indicates good hydration. Dark yellow or amber urine signals dehydration. Other signs of adequate hydration: you rarely feel thirsty, your skin has good elasticity, and you urinate 6-8 times per day.

Question 4

Does water intake change with exercise?

Accepted Answer

Yes. During exercise, you can lose 500-1000 mL of water per hour through sweat, depending on intensity and temperature. Drink 500 mL (about 2 cups) of water 2 hours before exercise, and replace roughly 150-250 mL every 15-20 minutes during activity. After exercise, drink enough to replace any weight lost (approximately 1.5 liters per kg lost).

Question 5

Is there such a thing as drinking too much water?

Accepted Answer

Yes — overhydration (hyponatremia) can occur when you drink excessive water too quickly, diluting sodium levels in the blood. This is rare in everyday life but can occur during endurance events when drinking plain water without electrolytes. For most people, drinking to thirst and maintaining pale yellow urine is the safest approach.

Water Intake Calculator — How Much Water Should You Drink Per Day?

Related Articles

Hydration & Fiber: The Nutrition Duo You Need

How Much Fiber Per Day? Exact Daily Intake by Age