During a juice fast, the body is stimulated to greater metabolic and eliminative activity.  After a prolonged fast, you will notice that you will lose some weight, your skin tightens or clears up, your hair shines, your eyes brighten, mental clarity and vision are improved, and you will feel more energetic.  A prolonged juice fast is powerful in potentially healing your internal organs, strengthening your immune system and helping to heal your body. Zenith Pure Greens Reviews