Meet Joe Cross. "The sort of bloke who likes to tackle his demons head-on". In this particular case, Joe's demon was fat. Body fat. He was, as he said, 'fat, sick and nearly dead'. So he went to America to tackle his dumptruck demon head-on with nothing but juice. And he inspired other to do the same with seemingly great results.
I've been juicing myself for a few years though. Not 60 consecutive days, but I do a juice diet from time to time, where I make fresh juices for 3 days in order to detox. I learned tricks of the trade from Jason 'The Juicemaster' Vale. The thing with all these programs though, is the down right monetization of them. I don't blame them, cash in by all means, but this always makes me super suspicious. It's my problem with Mindfulness too. There's a weird contradiction between Mindfulness and being the go-to guy in it, selling books and audiotapes on the subject for top dollar.
Not sure where I was going there. Ehm, right. Just remember, if you're not paying for something, you're the product.
Checkout the Fat, Sick and Nearly Dead website. There seem to be a lot of recipes on there, might come in handy if you own a juicer and a blender.
And here's another resource regarding juicing and weight loss and overall health.