this fat kid is abusing the shit out of his thick bones and tendons for the sake of "showing off" to weirdos on youtube, and his back must be loving it
are you stupid or retarded
?
I think his back is just fine. I mean, if he ever would get back problems, which I doubt, I am more than positive that he would've gotten them when he was squatting only 140kg... and then 160kg... 180kg... 200kg... 220kg etc etc etc, before he even approached 300kg-365kg.
His back is straight, he controls the weights.
So in conclusion, I think his back is just fine
.
try again.