Controversy still remains as to the capacity of Clen to mediate muscle growth, because of a strong anabolic or a potent anti-catabolic action. If Clen is not anabolic in humans, is it at least anti-catabolic? The answer is yes and no. Let me explain: if you are eating normally, I doubt that Clen exerts any significant anti-catabolic action. In fact, Clen is probably more catabolic than anti-catabolic at high dosages. However, when you’re on a low calorie diet, things are very different, and Clen is then truly an anti-catabolic drug. It may sound paradoxical but it is not at all.
When on a restrictive diet, the main problem for our body is to use the fat from the adipose tissue as energy in order to make up for the caloric deficit. In bodybuilders, this pathway is very inefficient. We eat a high carb diet all year long, which means we train our body to selectively use carbs at the expense of fat. On a diet, our body has not been trained to use fat instead of carbs. It is still good at using carbs and bad at burning fat. So, instead of using fat as energy our body uses a second best source of energy: proteins. And where are those proteins coming from, from our muscles, which are perceived as a protein reserve while we are on a diet. Our muscles shrink while fat remains stuck.
This is where Clen comes in. Clen is able to help our body uses its own fat as energy instead of muscle proteins. The fat burning process is accelerated which mechanically spares our muscles mass. At the end of the diet, thanks to a quicker and more efficient fat usage, we end up leaner and bigger. Not bigger compared to what we were before the diet but bigger compared to what we would have been at the end of the same diet without the Clen. It depends on the length and the severity of the diet, but Clen can make a difference of several kilograms, which is remarkable. Growth Hormone is popular before a competition for the very same reason: it renders the diet both easier and far more effective, preventing excessive muscle shrinkage. For those who still insist that it is possible to diet without sacrificing a significant amount of muscle mass, please take a long look at Dorian Yates' book "Blood and Guts". Before and after pictures are shown while he is on a diet. An expert eye will see that many pounds of pure beef were lost while the amount of fat he got rid of is limited. This is what happens when you get shredded, even if you’re the best in the world (Of course, by diet I don’t mean shedding five pounds before the holidays. I mean a real, shredding diet).