sorry but you can't starve yourself and not lose fat and muscle. you also can't subsist on a diet of sugar either. thats equally silly. your body needs protein, fat and complex carbs. where do you think your body is going to get the energy to function? all you are feeding it is sugar? that is an energy source that lasts only minutes... what cannot be used gets stored as fat.
of course for 10 days you will probably not hurt yourself, but its not right to characterize it as completely healthy and harmless and keep saying that you wont lose muscle or fat or that it gives your body everything it needs. neither of those things are true.
I have to be honest and say this is all just hippy crap. it involves all the typical favorite buzzwords - "poisons" and "toxins" and so on. What does that mean exactly? no one has addressed this and proved the actual need for this process. in fact, neither does the link you provided. it just makes some general and vague claims.
this for example, is one of many rediculous statements:. "As this is a complete balance of minerals and vitamins, one does not suffer the pangs of hunger."
it sounds good... but a balance of vitamins and minerals have nothing to do with hunger, the hormones that regulate it and how this sensation is surpressed. of course you are going to be hungry. you are not eating anything. i eat very well and take all kinds of vitamin supplements and am not deficient in anything - by his logic, i should never be hungry... yet oddly enough, i am hungry every two to three hours.
just because you have read a book... does not mean it is valid and correct information. these people have a book too
http://www.breatharian.com/breatharianism2.htm and they maintain that you can live by "eating sunlight" with no food whatsoever.
again, i am not saying you should not do it. i doubt you could cause any harm to your body. but it can't be characterized as a healthy thing to do. at the end of the day, you can drink Fleet Phosphosoda and in a few hours achieve the same thing to the point that you are ready for surgery. that means being 100% clean. Why would you want to do something like this for 10 days to MAYBE achieve the same thing?