Don't rely on the weight loss like it will stay off. I lost 25 lbs on my first juice fast but since your body slows its metabolism down, you will gain it back a lot faster than if you was to workout and lose it. I am on the P90X workout routine and doing small juice fasts now and hopefully I will keep it off this time. It looks great to lose that weight, but trust me, you will gain every bit + more if you do not exercise or stay on an extreme diet afterwards. In a way it is kind of worse if you are doing this for weight loss only. Just keep in mind that a juice fast should be for health and not necessarily weight control, whereas exercise and diet together will keep the weight off for sure. I am sure you already know all of this, but it is good for other people to know and not get all gong ho and miss the true reason of doing a juice fast.