why the hate?   she's the best in the world right now, isn't she?  Winning titles and having the longest lines?  
She said she's trained for 7 years, 7 days a week.  That's historic and remarkable.  I really doubt a person would need "juice" if they trained that much.  The body adapts to workload and voila, muscle growth.
All the haters doing the hating on her... I bet NONE of them has trained nonstop for the past 2,550 days!!!