The energy experience during the master cleanse is really because people are 1. Avoiding their digestive problems & 2. Living off of pure sugar. While this may give a temporary rise in general energy levels and even help you lose weight if you are not breaking down fats and proteins well, mid and long-term effect is that your body's response to carbohydrates gets worse and worse the more you pound liquid sugar and you also achieve nothing in regards to correcting your digestive problems. When you go back to eating proteins and fats (which your body needs to do) you end up, oftentimes, having an even harder time digesting them than you did before the cleanse.
Watch this video to learn more about how the master cleanse really affects your body…