Optimum Nutrition Serious Mass Flavour:CHOCOLATE Start sipping before

Start sipping before

whether extreme workouts like MMA

Grey - light

Gain access to huge bodyweight exercises like chin-ups

A favourite for HIIT and cross-training programs

Optimum Nutrition Serious Mass Flavour:CHOCOLATE Start sipping beforeOptimum Nutrition Serious Mass the ultimate in weight gain formulas. Ectomorph's rejoice! If you are training hard, doing the work everyday, squatting hard but not putting on the size you want then you should try Optimum Nutrition's Serious Mass. Benefits: Not just a weight gainer but a great all round supplement with added Creatine and Glutamine Very high in carbohydrates and calories that can be used to increase your daily protein and calorie intake