To stay healthy, you need to replace the fluids you lose. And don't forget, if the weather is hot or you are exercising, you will be losing even more water. How much water do we need? In climates such as the UK, we should drink approximately 1.2 litres (6 to 8 glasses) of fluid every day to stop us getting dehydrated. In hotter climates the body needs more than this. We also get some fluid from the food we eat. Signs of dehydration One of the first signs of dehydration is feeling thirsty. If you think you might not be getting enough fluids, check if you are showing any of these other common signs of dehydration: * dark coloured urine and not passing much when you go to the toilet * headaches * confusion and irritability * lack of concentration Pudding Pie Cookery School, we care about your health.