What helped Manuel Marquez to add muscles?

Each fan saw that the body of the American boxer Juan Manuel Marquez had been altered significantly. What led to such evident changes in the sportsperson?
Since Juan Manuel Marquez is linked to the admitted steroid dealer Angel “Memo” Hernandez, a lot of individuals think that the boxer’s muscles have been enhanced because of steroids and/or other doping products. Angel “Memo” Hernandez is the strength coach of Juan Manuel Marquez. This individual was related to the BALCO scandal. As it was learnt, this man supplied many top sportspersons with anabolic steroids and other doping products. He presented information about several athletes that bought banned medicines from him.
Learning that Angel “Memo” Hernandez has been a distributor of steroids, a lot of persons think that he provides doping products to Juan Manuel Marquez. Certain suspicions and even accusations were pronounced by Freddie Roach, Manny Pacquiao’s trainer. Freddie Roach claimed that it would be well to subject the both boxers Juan Manuel Marquez and Manny Pacquiao to drug testing before the ring.
Actually, Freddie Roach’s suspicions were not based on any drug evidence. He focused only on increased muscles of Juan Manuel Marquez.
Later Freddie Roach said that he didn’t mean anything serious. He affirmed that he was just joking.
Angel “Memo” Hernandez said that he was not just a coach. Since he is a scientist, he possesses great knowledge. He knows the best ways to acquire muscle mass and add strength. Angel “Memo” Hernandez notices that he knows the methods to do it legally. No any illegal drug is included in his methods. But he refuses to reveal his methods. The coach says that this is a secret.
As for Juan Manuel Marquez, he affirmed that he never administered any banned medicine. He noted that it was not drugs which caused the significant changes in his physique. Moreover, he specified that weight was not the main factor while fighting. According to Juan Manuel Marquez, a fighter should possess intelligence, speed and strength in order to have success.
Neither Juan Manuel Marquez, nor Manny Pacquiao was subjected to testing for banned medications before the fight. Such tests are commonly applied by the Nevada State Athletic Commission after matches.