How much water per day is essential?
A28] 2 litres of water per day ie around 8 glasses is essential for proper functioning of the body. If you do heavy exercise or are over-weight you need to drink more water. Water aids in digestion, helps to maintain body temperature and metabolise body fat, lubricates and cushions organs, transports nutrients, and flushes toxins from your body. If you are dehydrated your body feels fatigued, your brain becomes less active and its hard to concentrate.