that kid is fucking pimp!! you see him at the end pumping the crowd up demanding for applause...just like the pro's ??

obviously that is a stellar physique for a 6 year old, regardless of diet and trianing. BUT
at that age that body is soooo jacked full of growth hormone, and is sooooo super sensitive to androgens... with a proper diet and high protein and hard training i would expect the kid to be in great shape.