- Up Your Mass XXXL 1350 is loaded with 50g of a sustained released five protein blend that is packed with all nine essential amino acids that provide some big benefits. Protein sources that may help boost muscle strength and size, and because it can be broken down and absorbed quickly, can help give the body the boost it needs prior to and immediately following your workouts. Protein supplementation can increase the gains you see when you strength train regularly?both in terms of upping your 1-rep max and putting on more lean muscle.
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