Tag: Serious mass ingredients

A single two-scoop serving of Optimum Nutrition Serious Mass delivers over 1,200 calories, a massive dose for individuals struggling to consume enough calories to gain weight. So, what are the ingredients of serious mass that make it such a calorie-dense powerhouse designed for muscle building and weight gain?

With more than 1,200 calories packed into each two-scoop serving, Optimum Nutrition Serious Mass is designed for serious bulk-up goals. However, understanding what fuels this high-calorie gainer requires a deeper look at the specific ingredients that make up this popular supplement.