I have always been amazed how Jon can sing like he does while jumping and bouncing and dancing and doesn't ever sound winded and can hold 14-15 second notes then bounce around again! I can't walk up the stairs at the arenas without practically a heart attack LOL!! It's even more amazing at the stadium shows because the stage is sooooo big and he's running back and forth constantly!
I have noticed that Chris is moving around a lot more than the 1st time I saw him so he's working his way there!