160960,
if your goal is to lose weight on this fast, and for that reason only, you are better off trying another method. Water-only-fasting will actually inhibit weightloss because it lowers the metabolic rate by one quarter to two fifths, to conserve food reserves. This is an evolutionary development in times of famine and food scarcity.
Of course there are many diets on the market, but as the saying goes "all diets work but all diets fail" because when "normal" eating is resumed, the pounds just pile back on again, and in many cases more than before you started.
However, if you change the "way you eat" permanently, you can lose weight without feeling deprived or having to count the calories and here it is........... http://www.drfuhrman.com/weightloss/default.aspx