I found a clip on Athlean-X that show the importance of contracting the muscles you work in the back
much more than most people do.
He showed a picture on the difference - more or less same body type and workout-experience (see pic).
Now there is a clear difference on jeffs side (right).
My back is more to the left, but I've gotten much stronger lately (no aas).
However, I feel that I hit my muscles as I should, but I'm nowhere near that back from all these years...
So question is, does that mean that I need to re-evalutate my way of training?
Sure, genetics and bf%, but those two guys are worlds apart.