I guess the answer is that he does not work out in the conventional go to the gym and do a bunch of repetitive boring exercises- and by the way no offence to those who do - but he probably gets quite a good aerobic workout from going up on stage and sticking it to us two nights on one night off because of, as he puts it, 'my advanced years'! He said it- not me! I am not sure I would have the energy to do what he does and he has 22 years on me!