Serious mass protein powder is often associated with the elites, but that’s not the truth. It is a product suitable for any and everyone. The optimum nutrition serious mass renders the largest serving sizes on the market, that is, 334 grams. Optimum Nutrition (ON) is the most renowned brand name in the world of dietary supplements. ON manufactures a variety of quality protein powders and supplements, amongst which serious mass is the most sought one. Herein you will get an honest review of the serious mass from various perspectives. A QUICK BRIEF ABOUT SERIOUS MASS GAINERS The ON serious mass protein powder is a blend of carbohydrates, proteins, and healthy fats. Mass gainer is recommended for three categories of people namely: People who have a busy and hectic schedule, as in they cannot get enough of calories through their daily diet. People who lack proper and well-maintained diets. People who have weak appetites and fail to take the actual required amount of food for completing th...