I love the people that go on 48h fasting with only water and lemon to lose weight... losing fat is not a matter of starving it's a matter of what you put in the body, at the end of the day a nice caloric deficit of around 200calories is enough to make any person lose fat, and they shouldn't think of losing fat daily, they should think of losing fat as a weekly thing. I normally lose about 1kg per week when i'm trying to cut down, if i want to go hardcore i go 2kg per week but i know i'll probably end up losing muscle mass...