Serious mass gainer

Serious Mass is a mass gainer supplement from Optimum Nutrition designed for those looking to gain weight and build muscle. It typically contains around 1,250 calories per serving when mixed with water, making it suitable for individuals with fast metabolisms.

The formula includes a blend of proteins, primarily whey protein concentrate and casein, along with high amounts of carbohydrates for energy, often featuring complex carbs like oats. Serious Mass also includes healthy fats, vitamins, and minerals for a balanced nutritional profile.

It’s available in various flavors and can be consumed as a shake, often used post-workout or as a meal replacement to help meet caloric needs. Overall, it’s a popular choice for effective weight gain and muscle building.