Talk:Azula/@comment-98.237.114.192-20110726160215/@comment-4224293-20110730212148

That's why in Sozin's Comet her Firebending process makes her tired because the blue flames superheat the oxygen around her and make her body temperature fall greatly to a point that she couldn't Firebend and she had to wait to regain her "inner fire". Blue flames require a cost just like other powers that can be strengths and weeknesses in the same time.