Optimum Nutrition Serious Mass

The formula of Serious Mass by ON primarily targets muscle mass gain. This product is ideal for individuals who struggle to gain weight and supports an increase in body size as well as the development of body composition. To gain mass and weight, one must provide the body with sufficient calories. Sometimes, it can be challenging to meet the increased nutrient demands adequately to build muscle tissue and add more weight. Serious Mass was developed for such cases. For individuals with a fast metabolism who are also very active during the day, it is practically impossible to consume the right nutrients in sufficient amounts through conventional diets. Thanks to its calorie-dense formula with high protein and carbohydrate content, along with a comprehensive range of added vitamins, minerals, and certain nutrients essential for muscle growth, Serious Mass meets this need. Each serving contains 1250 high-quality calories and provides over 50 g of protein and 250 g of carbohydrates. Serious Mass can be consumed as a snack, post-workout, or simply as a meal replacement, making it an ideal companion for those who are ambitious in the gym.