Frequently Asked Questions

Quick answers

Does tea or coffee count as water?

Yes, all fluids count. Caffeine can be mildly diuretic for some people, but your net fluid balance is still positive.

How much water is too much?

Avoid repeatedly drinking more than about 1 liter per hour for long periods without electrolytes. If you have kidney, heart, or liver conditions, follow medical guidance.

Do I need electrolytes?

Usually not for daily life. They can help during long, hot, sweaty exercise sessions.

Should I drink by body weight or thirst?

Start with a weight-based estimate, then fine-tune with thirst and pale urine color. Increase on hot days and during activity.

Does height matter?

Not much on its own. Needs track more with body mass, activity level, climate, and life stage.