Others say you should drink half your body weight ... your body will let you know. "Water is such a critical substance for life, so when we're lacking, our body will no longer work at its peak ...

so this method may or may not work for you. Drink a glass before meals and between meals This isn't bad advice. Structuring water intake around a ritual like mealtime can ingrain hydration as a habit.

This equates to roughly eight cups of water. The Eatwell Guide recommends that people should generally aim to drink 6 to 8 cups or glasses of fluid a day, which could include water, lower-fat milk ...

Generally, a normal person needs to drink 2.5-3 liters of water per day. However, this quantity depends on your body weight, physical activity and weather. In summer, there is more sweating ...