Do you actually need eight glasses of water — the short version, when you are waiting for something

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Here is what tends to work, in the order that helps most.

Waiting is dead time you can spend on this instead.

If you only do one thing from this page, do the first point below. It is first because it removes the most friction for the least effort.

What helps

Food supplies a meaningful share of your water, especially fruit and vegetables.

There are real exceptions: hot weather, exercise, illness, pregnancy, and some medications. In those cases thirst lags behind need.

Pale straw-coloured urine is the simplest check. Dark yellow means drink more; completely clear means you can stop.

What to do when it does not work

Drinking more than you need does not improve skin, concentration or health. It mostly increases trips to the toilet.

Tea and coffee count. The idea that they dehydrate you is largely wrong at normal intakes.

Your kidneys are extremely good at telling you what they need. Thirst is a reliable signal for healthy adults.

Questions people ask