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Optimum Nutrition (ON) Serious Mass Gainer is a high-calorie sports nutrition supplement designed to complement increased calorie and protein intake during weight-gain and muscle-building phases.
Optimum Nutrition (ON) Serious Mass Gainer | Weight Gain & Muscle Support
Optimum Nutrition (ON) Serious Mass is designed for fitness enthusiasts and active individuals who need a convenient way to increase their daily calorie and nutritional intake. Mass gainers can be useful when it is difficult to meet higher calorie requirements through regular meals alone. Serious Mass can be incorporated into a balanced diet and consistent resistance-training routine as part of a structured weight-gain plan. The product combines a convenient shake format with protein and calories to complement your overall nutrition strategy. It can be used between meals or around training according to your individual nutritional requirements and the product's serving instructions. For exact calories, protein, carbohydrate content, serving size, ingredients, flavor, and nutritional values, refer to the current product packaging.
Mix the recommended serving of ON Serious Mass with water or milk according to the preparation instructions on the product packaging. Serving size and frequency can be adjusted according to individual calorie and nutritional requirements. Follow the manufacturer's recommended serving instructions.
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