Egg protein has long been considered the gold standard of protein in research studies due to its high bioavailability. When eating eggs, it’s important to eat both the white and the yolk as almost half of the protein is found in the yolk. One whole egg contains 1.3 grams of BCAAs and 0.5 grams of leucine. Eggs also contain the highest level of leucine per gram of protein compared with any other whole food protein source you’ll find. Eggs are a cost-effective, versatile, and convenient source of protein. in addition to its protein content, eggs also contain vitamin D and cholesterol, which can help support muscle building. Traditionally people have discarded egg yolks out of fear that the cholesterol-laden yellows will increase your blood cholesterol levels, however we now know that the amount of cholesterol you eat has very little impact on your blood cholesterol levels.