Bigmuscles Nutrition Lean GainLean gain is a protein enhanced formula that promotes lean muscle growth, recovery from exercise, healthy sustained energy and contains zero sugar. Lean gain consists of creatine ethyl ester, which has taken a front row seat for anabolic potential. Lean gain is designed to enhance lean muscle while reducing caloric intake to help with weight management. Lean gain is ultra low in carbohydrates, but high in protein and nutrient dense, muscle building