Around 80% of people are walking around dehydrated and don't even know if. We drink too much coffee, tea, fizzy minerals and the body then loses water. Drinking water detoxifies the liver and kidneys and takes waste from our bodies. Water is not the life source without good reason. Without it our bodys fine tuned engine runs less efficiently and parts of it may even pack up working. Drink about 2/3 pints (2 litres) per day. If you have 4-5% less than the recommended daily amount it can effect your mental and physical performance by up to 20 - 30%.