Weight loss question--help please?

Hello all! I am a male who weighs 230 pounds and stands 5'10". I plan to go on an extended Master Cleanse--hopefully 30 days. 40 if I am still feeling fine at 30 days. My question. If I exercise regularly (but of course nothing too strenuous while on the fast) during those 30 days, how much weight can I lose? The Master Cleanse book says approximately 2 pounds per day. Is this possible/probable/practical?

Now, I've noticed that most responses to weight loss questions stress that "everyone is different" and so is their weight loss. But all I'm looking for is a little encouragement. Is 2 pounds a day for 30 days really possible in a healthy manner?

Oh--I'm also doing Master-Cleanse for the cleansing aspects, which I am greatly looking forward to.

Please help with weight loss question! Thanks and Peace.