1.High Efficiency: When your muscles are thick, lean and hard you have the look of muscle density. Everyone wants muscle density but look aroundhow many of us actually have it Achieving muscle density requires increasing the protein content of your muscle cells, which in turn requires stimulating protein synthesis well above normal on a consistent basis refer to The Density Cycle diagram. All other things held constant, the more protein your muscle cells contain per unit of volume, the thicker, leaner and harder your muscles will appear. Athletic Efficiency AE may be a new term for many readers. AE refers to the ability of a nutritional supplement to stimulate protein synthesis per unit mass e.g. gram of it that is ingested. As you might expect, advanced bodybuilders need high-AE supplements. A combination of highly purified essential amino acids such as occurs in the nutritional supplement Density can support a higher AE than may be found with proteins when consumed before and after r