USN's Muscle Fuel Mass is a meal replacement formula that is designed for active people who demand the benefits of top quality proteins, increased amounts of complex carbohydrates and nutrients for optimum health and muscle performance. This product is specially designed for individuals that find it hard to gain mass (hard gainers), as well as endurance athletes that need a high carbohydrate meal to complement a strenuous endurance-training program. Since carbohydrates are "protein sparing", this will help these athletes not to lose unnecessary muscle with this kind of training programme. Studies suggest that using a variety of protein substrates may work best for improving protein synthesis and overall health.

Unlike other meal replacement formulas, USN's Muscle Fuel Mass is virtually sugar free and also offers a variety of anti-catabolic amino acids. This unique formula combines high biological value protein with very low glycemic index carbohydrates to build and repair muscle tissue while balancing nitrogen levels during workouts.

Just enough carbohydrates are used to fuel a strenuous endurance workout and replenish depleted glycogen. It is designed to pack muscle on even the hardest of the hard gainers with elevated protein-to-carb ratio and a level of quality protein that guarantees an anabolic environment of muscle growth and performance. USN's Muscle Fuel Mass is a complete meal that is very low in fat, great tasting and easily digested.