This article is for guys that aren’t as muscular as pro bodybuilders, but are still grinding day in and day out trying to look like one. Most amateur bodybuilders and gym rats believe that to look like their favorite pro bodybuilder, they simply have to train and eat exactly like him. However, once they replicate their diet and training to a tee, they're baffled when they're left with a fat, soft physique. A far cry from the pro they sought to emulate. There's a couple reasons for this that are often overlooked. Muscular Demand & Progressive Overload In Your Diet Most guys understand the progressive overload principal, where you slowly taper up yours weights as your strength adapts to the increased work load. However, what many don’t understand is that this not only applies to training, but for dieting as well. Muscle requires a lot of protein and calories to grow. However, excess calories that aren’t put towards muscle growth are shuttled right into fat storage. Say you have a 260 pound pro bodybuilder and a 150 pound teenager. Whose body do you think demands more nutrients and calories to grow? Clearly, the 260-pound bodybuilder. The reason for this is that muscle burns calories and requires more energy to grow. As you gain more muscle, your body burns more calories and expends more energy, increasing your body’s demand for energy. To meet this demand, you need MORE calories and protein to grow than you did when you had less muscle on your frame. The more muscle you gain, the more calories your body demands to continue growing. On the opposite side of the spectrum, we have a 150-pound teenage kid who wants to get huge like a bodybuilder. And after reading an article on a pro’s diet, he replicates exactly what he is doing. So now you have a 150-pound teenager eating the same energy demand that it takes for a 260 pound pro to grow muscle. When you eat such an excessive amount of calories, anything that’s not utilized for muscle building goes right to fat storage. If you don’t have a pro bodybuilder size, you're simply eating an exorbitant amount of calories for no reason. The end result is an out of breath, fat, confused kid wondering why he isn’t jacked. I've been there myself. Eat what you need to grow, and no more. Any extra calories beyond that are counter productive. To learn which weights you should be using to increase muscle growth CLICK HERE.