Check out these myostatin misfortunes. I think it would be great to use a drug that would lower myostatin, again, some odd 30%. Some of these creatures, however, have excessively lowered myostatin that verges on the level of non-existence.
http://www.who-sucks.com/people/monstrous-myostatin-misfortunes-a-collec
tion-of-myostatin-deficiency-pictures