Your body’s ability to build muscles depends entirely on how healthy it is. For instance, we all know that protein synthesis is essential for muscle growth, but if your body doesn’t have enough protein, muscles won’t grow. Also, diet plays an important role in sculpting your body, as a poor diet minimizes the positive effects of working out. To keep it simple: without cleansing, your body will have a harder time growing muscles, so you need to prepare yourself prior to working out, and the Challenge method is a good option.