Guide · body · 3 min read
Do you actually need eight glasses of water — the version for a bad week, if you are doing this in the middle of the day
Eight glasses is a number with no particular evidence behind it. Thirst and urine colour are better guides.
Start here
None of this is glamorous. All of it is doable, which matters more.
Midday is an underrated time for this.
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
There are real exceptions: hot weather, exercise, illness, pregnancy, and some medications. In those cases thirst lags behind need.
Your kidneys are extremely good at telling you what they need. Thirst is a reliable signal for healthy adults.
Tea and coffee count. The idea that they dehydrate you is largely wrong at normal intakes.
What to do when it does not work
Food supplies a meaningful share of your water, especially fruit and vegetables.
Pale straw-coloured urine is the simplest check. Dark yellow means drink more; completely clear means you can stop.
Drinking more than you need does not improve skin, concentration or health. It mostly increases trips to the toilet.
Questions people ask
Does coffee dehydrate you?
At normal intakes, no. The diuretic effect is small and does not outweigh the fluid you are taking in.
Can you drink too much water?
Yes, though it is rare. Extremely large amounts in a short time can dilute blood sodium, which is dangerous.
Written for people who want the practical version. No accounts, no tracking, no newsletter wall.
If this is not the angle you need, try How to get through the first hour without your phone — what to expect, if you are tired of apps, Tired eyes after a long day of screens, in plain terms, when you are at home and cannot settle or Ten minutes outside is not a wellness cliché — the long answer, briefly, when you have been putting it off.