Sleepiness or tiredness Children may be less active than usual. If urine colour remains dark after increasing water intakes, medical advice should always be sought. If all fluids contain water, does it matter which drinks you choose? Although all fluids provide water, and some also contain essential vitamins and minerals, some also provide energy calories. These calories contribute to your daily calorie intake in the same way as those from the foods you eat. How much water should I drink when I exercise?
Hydration FAQs | How much water should you drink | Natural Hydration Council
How much water does NHS Choices advise people to drink? The news stories are based on an opinion piece in the British Medical Journal, in which Dr Margaret McCartney, a GP from Glasgow, discusses the evidence behind the claims that we all need to drink more water to maintain our health. Dr McCartney also questions the advice from NHS Choices, that people should try to drink about six to eight glasses of water or other fluids a day to prevent dehydration. The two studies on which she bases her argument looked at volumes of water much greater than the current UK advice. Keeping hydrated is important.