I try to drink about 3 litres I carry a litre or 2litre bottle with me EVERYWHERE and fill it up when I have finished so I measure how much I have drank and encourages me to drink it
The more you drink the more you shrink, scientific fact rgeardless of what diet you are on. I drink a minimum of 3 litres but aim for 4 litres a day. It really helps and makes you feel fab!