The music: yup, you can train to whatever you want... I just never had him as a Jacko fan... I can't be the only one who found it a bit odd? I hate to see it, but I can see Borat loving Jacko

The training: I'm assuming he's preparing to spar and watching Haye on the TV... I'm just not sure why he is standing so square on and throwing little half arsed punches.

The little arm twirls: despite what boston (who wants up to believe he put a spoon up his nose... he sucks at trolling though) might tell you... no rotator cuffs are 'being burnt'... piss poor shoulder 'warm up'

Whatever works him him... maybe he likes to be relaxed and doesn't pressure himself into focus. I'll give him the benefit of the doubt and assume that he's not seriously in camp in this video... (because this verges on 'seriously camp' )