What’s on the Hydration poster
A definition and 6 facts worth remembering.
Water is needed for temperature regulation, transport, joint lubrication and every chemical reaction in the body. Needs vary with size, activity, climate and diet.
- Common guidance: about 2 litres of fluid a day for adults.
- Roughly 20% of intake comes from food.
- Tea, coffee and milk all count toward fluid intake.
- Thirst appears at around 1–2% dehydration.
- Pale straw urine suggests adequate hydration.
- Needs rise substantially with heat, exercise and illness.
- Typical — ~2 L/day
- From food — ~20%
- Body water — 50–60%
- Dark yellow urine and a dry mouth together are a reliable prompt to drink. A number o…
Drinking far beyond thirst can dilute blood sodium dangerously. More is not automatically better.
Questions about the Hydration poster
- What’s on the Hydration poster?
- A definition and 6 facts worth remembering. Water is needed for temperature regulation, transport, joint lubrication and every chemical reaction in the body. Needs vary with size, activity, climate and diet. Common guidance: about 2 litres of fluid a day for adults.; Roughly 20% of intake comes from food.; Tea, coffee and milk all count toward fluid intake.; Thirst appears at around 1–2% dehydration.; Pale straw urine suggests adequate hydration.; Needs rise substantially with heat, exercise and illness.; Typical — ~2 L/day; From food — ~20%; Body water — 50–60%; Dark yellow urine and a dry mouth together are a reliable prompt to drink. A number o…. Drinking far beyond thirst can dilute blood sodium dangerously. More is not automatically better.
- Who is the Hydration poster for?
- Hydration belongs to the Body & health section rather than to a school year, because health is not something one grade owns. Anyone learning nutrition can pin it up — a beginner, a student mid-course, or someone revising years later.
- When should you use the Hydration poster?
- Urine colour is a better guide than any fixed number of glasses. A wall chart earns its place by being glanceable from where the work is happening, so Hydration belongs on the wall where that health work actually happens, within glancing distance, rather than filed away.
- What other posters go with Hydration?
- Added Sugar, Alcohol Units and Caffeine sit alongside Hydration in the Body & health section. Printed together they make a wall rather than a single sheet, which is how a reference set actually gets used.Added SugarAlcohol UnitsCaffeine
- Is the Hydration poster free to download and print?
- Yes. Hydration downloads as a free PDF with no account, no email and no watermark, like everything else in the Body & health section. Print as many copies as you like for a home, a classroom, a library or a tutoring group; reselling the file is the only thing the licence rules out.Read the licence
- What size does the Hydration poster print at?
- Hydration is a vector PDF laid out for US Letter, and prints on A4 with Fit to page — the same file, no separate download. Because every mark on it is drawn rather than photographed, it stays sharp enlarged to A3, A2 or A1 at a copy shop. Colour carries emphasis only, so a greyscale print of Hydration loses nothing.Printing guide
Related posters
Charts that sit alongside Hydration on the same wall.
Browse every Body & health poster, or start from the full catalogue.