Rule 1 R1 Gain Clean Protein GainerR1 GAIN HIGH PROTEIN LEAN GAIN FORMULA You already have a decent base, but you want to add mass. Not just any mass, quality mass. Enter R1 Gain a lean gainer formula with heavy emphasis on protein. 50 grams worth. Unlike mass gainers that focus on total calories, lean gainers take into consideration where the calories are coming from. Fewer carbs. Fewer sugars. More protein. Quality gains. ZERO Creamers ZERO Spiking ZERO Soy Protein