I posted on the "Getting in Shape" board, but I also thought i'd ask here

Have any of you used Advocare for anything? A couple people I know use and love it, but I am not totally convinced. I heard about this 24 Day Challenge, but it sounds like you practically starve yourself. But then again, I don't know for sure. I heard "Spark" is good, but it's an energy drink. So, I guess I don't know much about the products so any info is much appreciated! Thanks ladies!