Atlas Lean Mass MRP is one of the most advanced & economical meal replacement powders available. Formulated to help athletes increase muscle mass & strength while reducing body fat. Atlas Lean Mass MRP contains two pure protein sources: Whey protein isolate, giving quickly digested protein of high biological value & are high in essential & branched chain amino acids. Micellar Casein, giving slowly digested, sustained release amino acids. Atlas Lean Mass MRP also provides germinated wholegrain barley provides low glycemic carbohydrates & both soluble & insoluble fibre beta glucans, essential fatty acids & vitamins.