First, if this is your first time doing a fast and your normally eat very differently, or have health issues you should consult with a doctor before doing a fast as extreme fasts can damage your body, and potentially send you to the hospital (or worse).

When I've fasted I have done vegetable broth, raw veggies, and a boiled egg or two. I have only done fasts for a week or less. Most of the research I did beforehand suggested fasting for an extended period of time wasn't necessary to see benefits, such as increased energy.

I saw the most success with the first one I did (which was just a weekend on fresh raw vegetables and broth) After doing it I just felt better and had more energy. I can tell the difference if I do any sort of fast after I've eaten poorly for awhile. I wouldn't say that I have lost real weight from fasting though, most of the time once you start eating fully again it comes back, but it is possible to lose one or two pounds. Which if you are stuck at a certain weight can be helpful.

I think eating how you have been eating (fresh veggies, yogurt, in addition to the juice) is much healthier than trying to only have juice for 10 days. As long as you are eating unadulterated foods your body will "detox". If you start feeling sick, don't just write it off as toxins leaving your body- eat an egg or something more similar to your regular diet.