This is the ultimate lean gainer you’ve been waiting for! Mutant Mass is a serious formula, designed with only hard working athletes in mind, who demand power, absolute size and all out strength. If you are serious about gaining slabs of lean muscle mass, faster than ever, then Mutant Mass is the answer. Mutant Mass was developed over 2 years of research and is based on sound, proven science. More importantly though, the finished Mutant Mass formula was also tested in the gym, where it was put through its paces by real life bodybuilders and strength athletes. The results? Increased strength and size. That’s not rocket science - that’s just Mutant Mass doing its’ amazing job.