Hydration facts and myths quiz
Water you waiting for? Test your hydration know-how.
10 multiple-choice questions, with the answer explained after each one.
Answer each question, see why, and beat your best score.
All 10 questions and answers
Want to check an answer or run the quiz out loud? Every question is here, with the answer hidden until you open it.
- Roughly what share of an adult body is water?
- About 10%
- About 30%
- About 60%
- About 95%
Show answer
About 60%. It varies with age and body composition.
- What colour urine generally suggests good hydration?
- Pale straw yellow
- Clear and frequent all day
- Brown
- Dark orange
Show answer
Pale straw yellow. Dark urine can mean you need more fluid.
- Does moderate coffee count towards daily fluid intake?
- No, it dehydrates you overall
- Only with milk
- Only decaf
- Yes
Show answer
Yes. Moderate amounts still hydrate overall.
- Can food provide some of your water?
- Yes. Fruit and vegetables contain lots of water
- Only soup
- Only bread
- No
Show answer
Yes. Fruit and vegetables contain lots of water. Watermelon is more than 90% water.
- Which minerals are the main electrolytes lost in sweat?
- Calcium and vitamin C
- Sodium and potassium
- Sugar and starch
- Iron and zinc
Show answer
Sodium and potassium. Long, sweaty exercise may need electrolytes.
- Is it possible to drink too much water?
- Yes. It can dangerously dilute blood sodium
- No, never
- Only cold water
- Only for children
Show answer
Yes. It can dangerously dilute blood sodium. This is called hyponatraemia.
- What is the best everyday drink for children?
- Fruit juice
- Water
- Soft drink
- Sports drink
Show answer
Water. Plain milk is also a good choice.
- During a heatwave you generally need…
- Less fluid
- More fluid than usual
- Only salty drinks
- The same
Show answer
More fluid than usual. Check on older people and babies in hot weather.
- Which feeling is the body's main signal to drink?
- Hunger
- Itchiness
- Yawning
- Thirst
Show answer
Thirst. Older adults can feel less thirsty, so they need reminders.
- Are sports drinks needed for a 30-minute walk?
- Only in winter
- Only for children
- No. Water is enough
- Yes, always
Show answer
No. Water is enough. Sports drinks add sugar and kilojoules.
Try the daily water intake calculator →