Exercise and training is one way of gaining big muscles, but if you bestow the ability to pump yourself up with air it is a lot faster and more effective; just take a good look at me pumping up all huge and strong!
A big powerful blue balloon!...I guess... *laughs* ^^;
Due to the fact that I, as a genie, can expand myself larger with air I could say that I'm just a blue balloon, but a "blue balloon" that can talk! ;)
Also yes, I can get inflated with air through my ponytail as well. x)