Talk:Energybending/@comment-5157484-20120602001931/@comment-4562082-20120602005508

He was fighting ozai using advance bending moves, and he use the avatar state so he obviously lost a lot Of energy fighting Ozai then he took Ozai bending away which dramatically drain him, also aang is only twelve too so he was physically not grown yet amon is and he was not in a intense fight.