SERIOUS MASS is the ultimate muscle building and weight gain formula
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Brand : Optimum Nutrition
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Optimum Nutrition : Serious Mass - Weight Gainer 6 Lbs.
SERIOUS MASS is the ultimate muscle building and weight gain formula. With 1,250 calories per 2-scoop serving and 50 grams of protein to support muscle recovery, this 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 support your weight gains goals.¹
OPTIMUM SERIOUS MASS WEIGHT GAINER
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