The idea that everyone needs exactly eight glasses of water a day is tidy but not quite right. How much you need depends on your size, how active you are, the weather and what else you eat and drink. Many healthy adults do well with roughly four to six cups of plain water daily, with the rest of their fluids arriving from other sources.
Those other sources add up quickly. Your morning coffee or tea counts, as does milk, and foods with high water content like salads, fruit and soups quietly chip in too. Caffeinated drinks are not the dehydrating villains they are often made out to be; over the course of a day they still leave you with a net gain. That said, plain water remains the easiest, lightest choice.
- Keep a glass or bottle within reach and sip steadily rather than gulping a lot at once.
- Pair a drink with every meal and snack so it becomes automatic.
- Add water-rich foods like cucumber, melon and berries to your plate.
- Drink a little extra on hot days or after a sweaty workout.
Your body offers simple feedback, too. Pale yellow is a good sign, while darker shades, feeling lightheaded or unusually tired can hint you are running low. If you have a health condition or take medication that affects fluids, ask your doctor what amount suits you, since more is not always better for everyone.
Source: Harvard Health Publishing
