Board Thread:Speculation House/@comment-10380701-20141011082048/@comment-10380701-20141012084650

Now that I think it, an alternative to her storing energy is that she can actually use up her aura to fill up her "meter".

So if she has no reserve at the ready, she has a permanently regenerating (although slow) source of energy to go back from in case of emergencies.

So to break it down.

Yang has her super meter, which increases whenever she attacks, ultra meter, which increases the more she's damaged, and her aura in case she needs to charge up.