Optimum Nutrition Serious Mass 12 lbs Bag Weight Gainer FLAVOR:Strawberry immunity and improve metabolism

immunity and improve metabolism

before or after exercise

raising adrenaline and increasing pain threshold — allowing heavier lifts and delayed time to exhaustion

High Quality Whey Protein Isolate

help suppress your appetite

Optimum Nutrition Serious Mass 12 lbs Bag Weight Gainer FLAVOR:Strawberry immunity and improve metabolismSUPPORTS MUSCLE BUILDING & WEIGHT GAIN GOALS Optimum Nutrition Serious Mass is the ultimate in weight gain formulas. With 1,250 calories per serving and 50 grams of protein for muscle recovery support, this instantized powder makes the ideal post workout and between meals shake for sizing up your goals. Serious Mass provides you with the tools you need to pack on the pounds and help you develop the physique youve always wanted. Optimum Nutrition