I did a juice fast for 60 days last year to lose weight and help get me back on track for getting myself back onto a healthier lifestyle, as I simply ate too much and didn't exercise.
It was the best thing I ever did, and I felt great from it, but you do need a lot of will power as it's easy to give in to temptation.
The first few days for me were the worst, as my body was detoxing from all the crap I had been consuming over the years, once this had passed everything looked a lot brighter and I started to feel great.
The worst bit about the juice fast, is cleaning the juicer if you buy a high speed juicer, but you get used to it, and all the non believers who think they know better.
From doing this I managed to turn my life a round and now after shedding over 10 stone in weight I eat healthily and continue to juice regularly, and have kept my weight off.
It's not a diet you can keep on continuously, but juicing can be used to to kick start you onto a healthier lifestyle.
The best juices are vegetable juices, but at first they may taste a bit drab, but I used an apple to add a bit of sweetness to make the juices tastier, after a while you become adventurous and will start juicing all sorts of things.
Spinach, celery, cucumber and apple was my favourite, as this gave me super energy, which kept you going all day unlike the false energy you get from coffee.